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ABSTRACT Luminescent lanthanide‐based coordination polymers (LnCPs) present great potential in low‐temperature detection due to their convenience in contactless readout. High quantum yields and energy transfer efficiency are favored by LnCPs as luminescent thermometer. In this work, based on the thermogravimetric analysis and temperature‐dependent powder x‐ray diffraction, coordinated and isolated molecules of [Ln2(mip)3(H2O)8·4H2O]∞ (abbreviated as Ln2MIP) were removed by dehydration process. Combining luminescent measurement and calculation, both quantum yields and energy transfer efficiency between Tb3+ and Eu3+ have been greatly enhanced. Additionally, the Eu3+ intensity of dehydrated Gd0.2Tb1.08Eu0.72MIP displays excellent temperature sensing ability from 77 to 300 K with enhanced relative sensitivity. These results demonstrate the potential of LnCPs in low‐temperature sensing with high quantum yields and energy transfer efficiency. [ABSTRACT FROM AUTHOR]

Accurate air temperatures underpin environmental research. Most professional meteorological air temperature measurements still expose thermometers within traditional, naturally ventilated screens. Their representation of true air temperature depends on screen airflow, and therefore local winds. Accuracies of daily maximum (Tmax) and minimum (Tmin) air temperatures are assessed by comparison between a naturally ventilated large conventional screen and a co‐located aspirated reference screen. In over 1200 days' data, the naturally ventilated Tmin and Tmax both showed small (median < 0.06°C) cold bias, but, in 1% of cases, warm Tmax bias and cold Tmin bias >|1°C|. The Tmin cold bias is associated with calm clear nights, and the Tmax warm bias events with calm winter days at low sun angles, allowing solar heating of the screen. The prevalence of poor natural ventilation, potentially affecting Tmin and Tmax, is estimated across European sites. Poor ventilation occurred at Tmin for 12% of values, and at Tmax for 4%. Climatological averaging will reduce these effects, but, without corroborating wind data, statistical changes in Tmin or Tmax, including identifying "Tropical Nights" (Tmin > 20°C) or occurrences of winter extremes, may have limited value. Wider adoption of aspirated thermometer screens, with an initial overlap period, will largely eliminate these effects. [ABSTRACT FROM AUTHOR]

Olivine is the most abundant mineral in mantle peridotite and a typical inclusion in diamonds, providing essential evidence for the characterization of the diamondiferous lithospheric mantle. Three olivine inclusions in diamonds (OlDia) from Liaoning in the North China Craton (NCC) were exposed for in situ measurements, and the compositional data of 62 other OlDia from Liaoning were collected based on previous reports. The enrichment of TiO2 (>0.1 wt.%) with high Cr# (>50; Cr# = 100Cr/(Cr + Al) by atom) was revealed, despite the predominance of depleted TiO2 contents and high Mg# (92.8–93.2; Mg# =100Mg/(Mg + Fe) by atom) for OlDia. Silica fluid accompanying olivine still trapped in the host diamond was recognized using Raman spectroscopy. Three thermometers were applied to the OlDia, based on the data from Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) and Electron Probe Micro-Analysis (EPMA), and a temperature range (TLA and TEPMA) of 1080–1380 °C was yielded. With respect to the TLA, Al-in-olivine thermometers were preferred, although there was a smaller deviation between TEPMA and TLA when using the Cr-in-olivine thermometer. The results of these thermometers show a high correlation with TEPMA, enabling their application based on EPMA data. Projections onto 39–42 mW/m2 model geotherms underline a diamondiferous base of the lithospheric mantle beneath the NCC. The lithospheric mantle is characterized by refractory and depleted sections, where enrichment metasomatism may have occurred at the lower roots (161–178 km). [ABSTRACT FROM AUTHOR]

In order to ensure the reliability and accuracy of long-term temperature measurement where the thermometers are discommodious or even impossible to access for conventional periodical calibration, a study on miniaturized in-situ self-calibrated (MISSC) thermometers based on Ga and Ga-Zn fixed points was conducted using temperature scale transfer technology. One MISSC thermometer consists of three parts: the first is the fixed-points hardware, including a container with two cells separately filled with Ga and Ga-Zn; the second is the temperature sensing hardware, made of a Type T thermocouple; the third is the mini-power heating hardware, made of a film resistance. The measurement and calibration (M&C) system comprises a temperature measurement and data processing subsystem and a mini-power heating control subsystem. Then, an in-situ self-calibration can be carried out by mini-power heating from a room temperature of about 20 °C, and then by comparison between the measured phase transition plateau results and the standard fixed-points, i.e., Ga fixed point (about 29.76 °C) and Ga-Zn fixed point (about 25.20 °C). A series of experiments were performed, and the results show that: (1) both the proposed hardware design and the self-calibration method are feasible, and (2) the Φ16 mm × 25 mm MISSC thermometer is found to be the most miniaturized one that can realize reliable self-calibration in this study. [ABSTRACT FROM AUTHOR]

Abstract Background There are many types of foreign bodies in the bladder and urethra. The most common way is to insert foreign bodies through the external urethra by oneself or by others. It is often seen in situations such as masturbation, mental disorder, curiosity, etc. This article discusses the clinical diagnosis and treatment methods and preventive measures for foreign bodies in the bladder and urethra caused by sexual fetishes. Case presentation This article introduces a rare case. The patient was a 54-year-old male who inserted a thermometer into his urethra during masturbation and could not remove it. During the operation, we tried various methods to remove the thermometer many times, but due to the angle of the thermometer embedded in the bladder and urethra and the smooth tip of the thermometer, it could not be removed with foreign body forceps. Finally, a homemade negative pressure aspirator (consisting of a section of infusion tube and a 50 ml syringe) was used to completely remove the thermometer from the bladder and urethra. The Written informed consent was obtained from patient did not experience complications such as mercury leakage and bladder and urethral perforation. A telephone follow-up 4 months later showed that the patient urinated smoothly without discomfort such as frequent urination and urgency. Discussion There are many types of vesicourethral foreign bodies. When treating vesicourethral foreign bodies clinically, these can be removed through endoscopy, laparoscopy or open surgery according to the size, type and nature of the foreign bodies. At the same time, in order to effectively prevent the occurrence of bladder and urethra foreign bodies, sex education should be vigorously promoted.

Body temperature is a crucial indicator in assessing human physiological activity and health, particularly in pediatric and critically ill patients. This study aimed to compare temperature recordings obtained from digital calibrated thermometers with calibrated infrared thermometers and non‑calibrated infrared thermometers against calibrated ones. An observational prospective study was conducted at AIIMS Bhopal, involving volunteers and febrile patients who consented to participate. Approval was obtained from the Institutional Human Ethics Committee, and 200 participants meeting inclusion/exclusion criteria were included. Data were collected and analyzed using Microsoft Excel. Mean and variance values were computed for both volunteer and febrile patient groups. The P values in both groups were less than 0.05, indicating a significant difference between non‑calibrated handheld infrared thermometers (T1), calibrated digital thermometers (T2), and their individual comparison with calibrated infrared thermometers (T3). Variance was higher in non‑calibrated infrared thermometers (T1) compared to calibrated ones (T2) in both healthy volunteers and febrile patients. Pearson’s correlation coefficient analysis within the febrile patient group demonstrated a robust positive correlation among all three thermometers compared to the healthy volunteers group. The study highlights variations in temperature readings when using different thermometers, irrespective of whether the assessment is conducted on healthy volunteers or febrile patients. Notably, the strength of association is lower in healthy volunteers than in febrile patients, suggesting that the interchangeability of thermometers may be more reliable and sufficient when assessing individuals with fever. These findings underscore the importance of careful consideration and validation of thermometer choices, especially in clinical settings where accurate temperature measurement is critical. [ABSTRACT FROM AUTHOR]

Abstract Accurate air temperatures underpin environmental research. Most professional meteorological air temperature measurements still expose thermometers within traditional, naturally ventilated screens. Their representation of true air temperature depends on screen airflow, and therefore local winds. Accuracies of daily maximum (Tmax) and minimum (Tmin) air temperatures are assessed by comparison between a naturally ventilated large conventional screen and a co‐located aspirated reference screen. In over 1200 days' data, the naturally ventilated Tmin and Tmax both showed small (median |1°C|. The Tmin cold bias is associated with calm clear nights, and the Tmax warm bias events with calm winter days at low sun angles, allowing solar heating of the screen. The prevalence of poor natural ventilation, potentially affecting Tmin and Tmax, is estimated across European sites. Poor ventilation occurred at Tmin for 12% of values, and at Tmax for 4%. Climatological averaging will reduce these effects, but, without corroborating wind data, statistical changes in Tmin or Tmax, including identifying “Tropical Nights” (Tmin > 20°C) or occurrences of winter extremes, may have limited value. Wider adoption of aspirated thermometer screens, with an initial overlap period, will largely eliminate these effects.

The thermometer digital-to-analog converter (DAC) is a distinctive architecture that plays a vital role in converting digital data into corresponding analog signals, the thermometer DAC employs a resistor network where each bit of the digital input corresponds to a unique resistor. It has notable drawbacks that need careful consideration. As the resolution of the DAC increases, the number of required current sources grows exponentially, leading to complex and demanding circuitry. This can escalate power consumption and occupy significant chip area, which is a critical concern in integrated circuit design. Furthermore, the current mismatch between the multiple current sources. Therefore, integrating memristors into DACs paves the way for more compact and efficient designs, reducing system complexity and enhancing reliability. The Voltage ThrEshold Adaptive Memristor (VTEAM) model of memristor is validated by using Virtuoso. In addition, a digital-to-analog converter based on memristor technology is implemented, taking advantage of the memristor's compact size, minimal power usage, and a voltage threshold that is relatively low. The DAC design being proposed is based on a core DAC cell that consists of two memristors connected in opposing orientations. [ABSTRACT FROM AUTHOR]

An accurate deep-tissue thermometer with excellent photothermal conversion efficiency is desired for effective photo-thermal therapy (PTT), which will minimize collateral damages to normal cells from overheating or ineffective treatment from insufficient heat. Herein, a nano-thermometer with Nd3+/Yb3+/Ho3+ tri-doped Na 3 InF 6 was designed by hydrothermal method to real-time monitor tissue temperature, and its luminescent performance and temperature sensing behavior based on the luminescence intensity ratio (LIR) technology in the visible and near infrared regions were analyzed under 808 nm excitation. The advantage of temperature probes located in the near infrared (NIR) biological window region was demonstrated by the penetration depth in simulating biological tissue agar. Furthermore, the feasibility of the sample as a self-monitoring photothermal platform was verified by in vitro bactericidal experiments, which expressed excellent photothermal conversion performance and sterilizing rates reached 59.8 % (E. coli) and 53.6 % (S. aureus), respectively. Results demonstrated that the present single-phased Na 3 InF 6 :Nd3+/Yb3+/Ho3+ nanophosphor could serve as a bifunctional photothermal agent with internal tissue temperature measurement and photothermal conversion. Na 3 InF 6 : Nd3+, Yb3+, Ho3+ UC nanoparticles with multimode temperature detection and photothermal conversion functions. [Display omitted] [ABSTRACT FROM AUTHOR]

The article describes the on-board control-measurement system designed to record the main flight parameters of a micro-convertiplane type unmanned aerial vehicle and the element base used for this purpose. The methodology of conducting tests in stationary mode through the on-board control-measurement system was developed and tests were carried out. The engine's diagnostic check and condition assessment has been performed using the on-board control-measuring system. The possibility of on-ground check of the micro unmanned aerial vehicles power elements before and after the flight, as well as the possibility of monitoring the flight events that may occur in the air during the flight has been shown. The data on the power consumption and temperature of each engine in the stationary mode, the direction of the aircraft axes and the velocity vector have been recorded by mean of the developed on-board control-measurement system, as well as time dependence diagrams of the corresponding parameters have been built in comparative order based on the obtained values. A methodology has been developed for the diagnostics of the engine operation of the micro-unmanned aerial vehicle before and during the flight. It has been shown that the temperature, power consumption and number of revolutions of the engines included in the power system of the aircraft, as well as the aircraft axes and velocity vector direction data is recorded during the flight, by mean of the on-board control-measurement system designed to collect data on the flight-technical parameters of the convertiplane-type micro-unmanned aerial vehicles. [ABSTRACT FROM AUTHOR]

Patterning graphene onto polymeric materials offers benefits in realizing flexible, stretchable, and wearable multifunctional electrodes. However, the employed integration approaches and use of non‐patternable polymers hinder the patterning of graphene at the sub‐millimeter (mm) scale. Serpentine‐shaped thermally active graphene patterns (thermistors) of 500 × 500 µm2 area are reported by the seamless integration of chemical vapor‐deposited graphene (GCVD) into readily available SU‐8 polymer with MEMS‐compatible cleanroom fabrication processes. The thermistor resistance decreases with an increase in graphene temperature changed by local heat conduction or environmental thermal radiations; hence, exhibits a negative temperature coefficient (NTC) of resistance of 0.0012/°C. Furthermore, very fast resistive switching with 1 s response and 3.2 s recovery time is observed under cyclic heating and cooling. Several application scenarios including, monitoring of surface temperature (e.g., kettle and human body), rapid response (0.25 s) to heat conduction and radiations (0.5 s) from human finger at room temperature for contact and touch‐free proximity switching (e.g., turn ON and OFF an LCD display) are demonstrated. Moreover, owing to its small area less than a ceramic resistor enabled to integrate the fabricated thermistor onto a printed circuit board (PCB) to construct a fully packaged thermometer to monitor ambient temperature. [ABSTRACT FROM AUTHOR]

There is concern that the values provided by devices using infrared thermometry in emergency departments (EDs) do not reflect body core temperature accurately. Evaluation of three thermometers commonly used in the ED. Two infrared ear thermometers and an infrared forehead thermometer were evaluated using 1) the Voltcraft IRS-350 calibration device, 2) comparing temperature values to a rectal end-exercise temperature (T-RECT) of 38.1°C in 12 participants, and 3) comparing temperature values to rectal temperature in 133 ED patients. Calibration across the human core temperature range revealed that the ear thermometers underestimated radiant temperature by 0.77 ± 0.39°C and 1.84 ± 0.26°C, respectively, whereas the forehead thermometer overestimated radiant temperature by 0.90 ± 0.51°C. After cycling exercise, all thermometers underestimated T-RECT (0.54 ± 0.27°C and 1.03 ± 0.48°C for the ear thermometers and 1.14 ± 0.38°C for the forehead thermometer). In the ED, the ear thermometers underestimated T-RECT by 0.31 ± 0.37°C and 0.46 ± 0.50°C, whereas the forehead thermometer exhibited a nonsignificant overestimation of 0.04 ± 0.46°C. If the threshold for fever in all systems had been set to 37.5°C instead of 38.0°C, the sensitivity and specificity of the systems for real fever (T-RECT ≥ 38°C) are, respectively, 71% and 96% (ear thermometer 1), 57% and 97% (ear thermometer 2), and 86% and 90% (forehead thermometer). We conclude that the investigated thermometers are not reliable as devices to measure radiant temperature, cannot be used to assess body core temperature during exercise, but may be used as a screening device, with 37.5°C as a threshold for fever in emergency care settings. [ABSTRACT FROM AUTHOR]

Body temperature is a crucial indicator in assessing human physiological activity and health, particularly in pediatric and critically ill patients. This study aimed to compare temperature recordings obtained from digital calibrated thermometers with calibrated infrared thermometers and non-calibrated infrared thermometers against calibrated ones. An observational prospective study was conducted at AIIMS Bhopal, involving volunteers and febrile patients who consented to participate. Approval was obtained from the Institutional Human Ethics Committee, and 200 participants meeting inclusion/exclusion criteria were included. Data were collected and analyzed using Microsoft Excel. Mean and variance values were computed for both volunteer and febrile patient groups. The P values in both groups were less than 0.05, indicating a significant difference between non-calibrated handheld infrared thermometers (T1), calibrated digital thermometers (T2), and their individual comparison with calibrated infrared thermometers (T3). Variance was higher in non-calibrated infrared thermometers (T1) compared to calibrated ones (T2) in both healthy volunteers and febrile patients. Pearson’s correlation coefficient analysis within the febrile patient group demonstrated a robust positive correlation among all three thermometers compared to the healthy volunteers group. The study highlights variations in temperature readings when using different thermometers, irrespective of whether the assessment is conducted on healthy volunteers or febrile patients. Notably, the strength of association is lower in healthy volunteers than in febrile patients, suggesting that the interchangeability of thermometers may be more reliable and sufficient when assessing individuals with fever. These findings underscore the importance of careful consideration and validation of thermometer choices, especially in clinical settings where accurate temperature measurement is critical.

Abstract Background Ingestion of thermometers is a very rare occurrence and associated with penetrations of hollow organs. An event decades ago can lead to the development of fistulas. Case presentation We present a case of a 62-year-old male who swallowed multiple thermometers with a length of up to 22 cm over a period of 40 years. Diagnostic imaging presented a retroperitoneal abscess due to a duodenal perforation of the longest thermometer as well as multiple other thermometers stuck in the small intestine. After all thermometers were removed and the abscess drained, the patient showed a clinical deterioration. In further operations we found a duodeno-sigmoid fistula and a gastro-thoracal fistula, which were not visible in the initial operations and imaging. Conclusion We recommend an active search for fistulas especially in the case of long-foregone ingestion.

In this research study, a cost-effective and reliable weather station using a microcontroller system containing instruments and sensors for measuring and recording ambient variables was designed, fabricated, and tested. The dataset recorded and stored in the meteorological system can be applied to conduct various research in the field of energy and environment, especially in solar systems. Employing a microcontroller system reduces costs and provides special features such as accessing data on the web-based spreadsheets and adding control devices. In this system, meteorological information including solar radiation, air temperature, wind velocity, and air relative humidity is measured and saved in user-defined time intervals such as 30 seconds. The total cost for measuring equipment, sensors, and microcontroller along with a data logger is about 110 USD. To demonstrate the importance of using local meteorological data, in the vicinity of the case studies, the dataset provided by the local weather station was compared with the meteorological data of two nearby national stations for one month. The results revealed that the values reported by the national stations were different from the actual values measured by the local weather station. The deviations for solar radiation, wind velocity, air temperature and humidity values were at least 5, 9, 7%, and more than 100%, respectively.

In order to ensure the reliability and accuracy of long-term temperature measurement where the thermometers are discommodious or even impossible to access for conventional periodical calibration, a study on miniaturized in-situ self-calibrated (MISSC) thermometers based on Ga and Ga-Zn fixed points was conducted using temperature scale transfer technology. One MISSC thermometer consists of three parts: the first is the fixed-points hardware, including a container with two cells separately filled with Ga and Ga-Zn; the second is the temperature sensing hardware, made of a Type T thermocouple; the third is the mini-power heating hardware, made of a film resistance. The measurement and calibration (M&C) system comprises a temperature measurement and data processing subsystem and a mini-power heating control subsystem. Then, an in-situ self-calibration can be carried out by mini-power heating from a room temperature of about 20 °C, and then by comparison between the measured phase transition plateau results and the standard fixed-points, i.e., Ga fixed point (about 29.76 °C) and Ga-Zn fixed point (about 25.20 °C). A series of experiments were performed, and the results show that: (1) both the proposed hardware design and the self-calibration method are feasible, and (2) the Φ16 mm × 25 mm MISSC thermometer is found to be the most miniaturized one that can realize reliable self-calibration in this study.

Fevers have been used as a marker of disease for hundreds of years and are frequently used for disease screening. However, body temperature varies over the course of a day and across individual characteristics; such variation may limit the detection of febrile episodes complicating the diagnostic process. Our objective was to describe individual variation in diurnal temperature patterns during episodes of febrile activity using millions of recorded temperatures and evaluate the probability of recording a fever by sex and for different age groups. We use timestamped deidentified temperature readings from thermometers across the US to construct illness episodes where continuous periods of activity in a single user included a febrile reading. We model the mean temperature recorded and probability of registering a fever across the course of a day using sinusoidal regression models while accounting for user age and sex. We then estimate the probability of recording a fever by time of day for children, working-age adults, and older adults. We find wide variation in body temperatures over the course of a day and across individual characteristics. The diurnal temperature pattern differed between men and women, and average temperatures declined for older age groups. The likelihood of detecting a fever varied widely by the time of day and by an individual's age or sex. Time of day and demographics should be considered when using body temperatures for diagnostic or screening purposes. Our results demonstrate the importance of follow-up thermometry readings if infectious diseases are suspected. [ABSTRACT FROM AUTHOR]

The terms heat and temperature are two distinct but closely related concepts. The core difference between heat and temperature is that heat deals with thermal energy, whereas temperature is more concerned with molecular kinetic energy. As a substance is cooled, it loses thermal energy. Eventually it will reach a temperature at which it no longer possesses any thermal or kinetic energy and so it can no longer be cooled; this temperature is absolute zero. Another unique temperature concept is the triple point of a substance; the temperature at which a substance exists simultaneously and in perfect equilibrium in a solid, liquid and gaseous phase. The triple point is unique for every substance; for water, it reaches its triple point at 0.01°C at a pressure of 0.006 atmospheres. Temperature may be measured using the Celsius, Fahrenheit and Kelvin scales. Many clinical thermometers are designed to display the output in a digital format to enable easier monitoring as well as recording. Non-electrical thermometers are still in use today. Thermoregulation in the anaesthetized patient is achieved by the understanding of the mechanisms of heat loss, as well as the use of thermometers, warming and cooling devices. [ABSTRACT FROM AUTHOR]

Background: Ingestion of thermometers is a very rare occurrence and associated with penetrations of hollow organs. An event decades ago can lead to the development of fistulas. Case presentation: We present a case of a 62-year-old male who swallowed multiple thermometers with a length of up to 22 cm over a period of 40 years. Diagnostic imaging presented a retroperitoneal abscess due to a duodenal perforation of the longest thermometer as well as multiple other thermometers stuck in the small intestine. After all thermometers were removed and the abscess drained, the patient showed a clinical deterioration. In further operations we found a duodeno-sigmoid fistula and a gastro-thoracal fistula, which were not visible in the initial operations and imaging. Conclusion: We recommend an active search for fistulas especially in the case of long-foregone ingestion. [ABSTRACT FROM AUTHOR]

Non-invasive photo-thermal therapy (PTT) has been proposed as a powerful method for cancer treatment, in which accurate temperature monitoring is necessary to prevent ineffective therapy or damage to normal cells during the process of PTT. This promotes the design and development of photothermal agents (PTAs) with real-time temperature control and excellent photothermal conversion. Here, the designed dual-function photothermal agents YVO 4 : Nd3+, Yb3+@IR-780 were obtained, while the temperature detection behavior based on the fluorescence intensity ratio (FIR) of Nd3+ (4F 3/2 → 4I 11/2) to Yb3+ (2F 5/2 → 2F 7/2) and the temperature-dependent Yb3+ lifetime were investigated in detail. The advantages of fluorescence lifetime thermometry in the biological field were confirmed by the internal temperature detection of pork tissue through comparison with fluorescence intensity ratio technology. The photo-thermal conversion efficiency of samples YVO 4 : Nd3+, Yb3+@IR-780 reached about 34.3% and its potential application was also evaluated by the sterilization of E. coli and S. aureus, which shows that IR-780 coated nano-materials have excellent photo-thermal conversion performance. Results illuminated that the present photothermal agents with temperature self-monitoring had a bright future in the process of photothermal therapy. The NIR-Multifunctional photo-thermal therapeutic nanoplatform YVO 4 : Nd3+, Yb3+@IR-780 under 808 was developed, which offers the functions of temperature sensing and photo-thermal ablation. [Display omitted] [ABSTRACT FROM AUTHOR]

Objective To explore the applicability of commonly used occupational health risk assessment models in the dynamic risk assessment of mercury in a thermometer manufacturing company. Methods In December 2019 and October 2020, an occupational health site survey and testing was conducted on a thermometer manufacturer to assess the occupational health risks of mercury and compare the risk ratio before (2019) and after (2020) renovation of occupational protective facilities, using the United States Environmental Protection Agency (EPA) risk assessment guidelines, the Singapore Ministry of Manpower (MOM) semi -quantitative risk assessment method for chemical substance occupational exposure, the International Council on Mining and Metals (ICMM) quantitative assessment method, and the GBZ/T 229.2-2010 "Classification of Occupational Hazards in the Workplace Part 2: Chemicals". Results In 2019, the mercury concentrations at 75% (9/12) of work positions were higher than the national OEL. The EPA and ICMM quantitative risk assessment methods showed that the risks were mainly unacceptable, while the MOM method showed that the risks were primarily high. The hazard classification method showed that the work positions in the triangular thermometer production area were classified as severe hazard work, and 33% of the work positions in other areas were categorized as moderate hazard work. After the renovation of the protective facility in 2020, the mercury concentrations at all work positions meet the requirements of China's occupational health standards. The risk ratios shown by the MOM, ICMM, and operational hazard classification in 2020 significantly decreased compared to the 2019 risk levels (P < 0.05), while the risk ratio shown by the EPA model showed no statistically significant difference (P > 0.05). Conclusions The applicability of the MOM, ICMM, and GBZ/T 229.2-2010 are suitable for dynamic assessment of occupational health risks of mercury in this thermometer manufacturing enterprise. [ABSTRACT FROM AUTHOR]

BackgroundMany persons with active SARS-CoV-2 infection experience mild or no symptoms, presenting barriers to COVID-19 prevention. Regular temperature screening is nonetheless used in some settings, including university campuses, to reduce transmission potential. We evaluated the potential impact of this strategy using a prospective university-affiliated cohort.MethodsBetween June and August 2020, 2912 participants were enrolled and tested for SARS-CoV-2 by PCR at least once (median: 3, range: 1-9). Participants reported temperature and symptoms daily via electronic survey using a previously owned or study-provided thermometer. We assessed feasibility and acceptability of daily temperature monitoring, calculated sensitivity and specificity of various fever-based strategies for restricting campus access to reduce transmission, and estimated the association between measured temperature and SARS-CoV-2 test positivity using a longitudinal binomial mixed model.ResultsMost participants (70.2%) did not initially have a thermometer for taking their temperature daily. Across 5481 total person months, the average daily completion rate of temperature values was 61.6% (median: 67.6%, IQR: 41.8-86.2%). Sensitivity for SARS-CoV-2 ranged from 0% (95% CI 0-9.7%) to 40.5% (95% CI 25.6-56.7%) across all strategies for self-report of possible COVID-19 symptoms on day of specimen collection, with corresponding specificity of 99.9% (95% CI 99.8-100%) to 95.3% (95% CI 94.7-95.9%). An increase of 0.1 °F in individual mean body temperature on the same day as specimen collection was associated with 1.11 increased odds of SARS-CoV-2 positivity (95% CI 1.06-1.17).ConclusionsOur study is the first, to our knowledge, that examines the feasibility, acceptability, and effectiveness of daily temperature screening in a prospective cohort during an infectious disease outbreak, and the only study to assess these strategies in a university population. Daily temperature monitoring was feasible and acceptable; however, the majority of potentially infectious individuals were not detected by temperature monitoring, suggesting that temperature screening is insufficient as a primary means of detection to reduce transmission of SARS-CoV-2.

Olivine is the most abundant mineral in mantle peridotite and a typical inclusion in diamonds, providing essential evidence for the characterization of the diamondiferous lithospheric mantle. Three olivine inclusions in diamonds (OlDia) from Liaoning in the North China Craton (NCC) were exposed for in situ measurements, and the compositional data of 62 other OlDia from Liaoning were collected based on previous reports. The enrichment of TiO2 (>0.1 wt.%) with high Cr# (>50; Cr# = 100Cr/(Cr + Al) by atom) was revealed, despite the predominance of depleted TiO2 contents and high Mg# (92.8–93.2; Mg# =100Mg/(Mg + Fe) by atom) for OlDia. Silica fluid accompanying olivine still trapped in the host diamond was recognized using Raman spectroscopy. Three thermometers were applied to the OlDia, based on the data from Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) and Electron Probe Micro-Analysis (EPMA), and a temperature range (TLA and TEPMA) of 1080–1380 °C was yielded. With respect to the TLA, Al-in-olivine thermometers were preferred, although there was a smaller deviation between TEPMA and TLA when using the Cr-in-olivine thermometer. The results of these thermometers show a high correlation with TEPMA, enabling their application based on EPMA data. Projections onto 39–42 mW/m2 model geotherms underline a diamondiferous base of the lithospheric mantle beneath the NCC. The lithospheric mantle is characterized by refractory and depleted sections, where enrichment metasomatism may have occurred at the lower roots (161–178 km).

The optical contactless thermometer demonstrates remarkable advantages over traditional contact thermometers. However, maintaining a strong optical signal output across a wide temperature range poses a challenge due to the thermal quenching effect. In this study, we aimed to overcome the limitation of low signal intensity in high-temperature applications by developing a Pr3+-doped BaSc 2 Ge 3 O 10 (BSGO) phosphor with anti-thermal quenching properties. This phosphor was designed to ensure a stable and sufficiently strong light signal for accurate temperature measurements. The phosphor exhibited a negative thermal quenching effect, where the integrated emission intensity spanning from 450 nm to 800 nm increased from 173 K to 253 K, and the intensity at 353 K still remained stronger than at 173 K. Multiple 4f-4f transition emissions were observed in the phosphor, and the fluorescence intensity ratio (FIR) was utilized as a standard parameter for temperature evaluation ranging from 82 K to 353 K. At 82 K, the phosphor achieved maximum relative sensitivity (S r) of 2.3% K−1. The presence of multiple traps with depths ranging from 1.09 eV to 1.50 eV not only supported luminescence with a negative thermal quenching effect but also resulted in long persistent luminescence (LPL), which was systematically investigated in this study. Long persistent luminescence phosphor of BaSc 2 Ge 3 O 10 :Pr3+ with negative thermal quenching effect and temperature sensitive performance was designed and systematically investigated. [Display omitted] • BaSc 2 Ge 3 O 10 :Pr3+ luminescent thermometer with maximum relative sensitivity (S r) of 2.3% K−1 was designed. • Reverse thermal quenching effect is observed in temperature range of 173 K–353 K in BaSc 2 Ge 3 O 10 :Pr3+. • Long persistent luminescence (LPL) stemming from traps with varying depths was detected. • The Pr3+ dopant influences the distribution of traps and promotes the formation of shallow traps. [ABSTRACT FROM AUTHOR]

In this research study, a cost-effective and reliable weather station using a microcontroller system containing instruments and sensors for measuring and recording ambient variables was designed, fabricated, and tested. The dataset recorded and stored in the meteorological system can be applied to conduct various research in the field of energy and environment, especially in solar systems. Employing a microcontroller system reduces costs and provides special features such as accessing data on the web-based spreadsheets and adding control devices. In this system, meteorological information including solar radiation, air temperature, wind velocity, and air relative humidity is measured and saved in user-defined time intervals such as 30 seconds. The total cost for measuring equipment, sensors, and microcontroller along with a data logger is about 110 USD. To demonstrate the importance of using local meteorological data, in the vicinity of the case studies, the dataset provided by the local weather station was compared with the meteorological data of two nearby national stations for one month. The results revealed that the values reported by the national stations were different from the actual values measured by the local weather station. The deviations for solar radiation, wind velocity, air temperature and humidity values were at least 5, 9, 7%, and more than 100%, respectively. [ABSTRACT FROM AUTHOR]

This paper proposes a new methodology to improve territorial cohesion in clustering processes where many variables from different topics are considered. Clustering techniques provide added value to identify typologies, but there are still unsolved challenges when data contain an unbalanced number of variables from different topics. The territorial feature selection method (TFSM) is presented as a method to select the representative variable of each topic such that the interpretability of resulting clusters is preserved and the geographical cohesion is improved with respect to classical approaches. This paper also introduces the thermometer as a new knowledge acquisition tool that allows experts to transfer semantics to the data mining process. TFSM proposes the index of potential explainability ( E k ) as the criteria to select the most promising variables for clustering. E k is based on the combination of inferential testing and metrics such as support. The proposal is applied with the INSESS-COVID19 database, where territorial groups of vulnerable populations were found. A set of 195 variables with 21 unbalanced thematic blocks is used to compare the results with a traditional multiview clustering analysis with promising results from both the geographical and the thematic point of view and the capacity to support further decision making. [ABSTRACT FROM AUTHOR]

Article highlights The body temperature can be measured using a powered toothbrush with an integrated temperature sensor. The values obtained from a temperature sensor–integrated powered toothbrush was comparable to those obtained from a traditional oral thermometer. The implication of the study is a way to facilitate the collection of temperature data, but the design of the temperature sensor’s integration in the brush head needs to be further developed, and the possibility of transferring the obtained data directly to a central server using WIFI must be explored.

Öz Amaç Çocukları ateşlendiğinde ailelerin neler hissettikleri, ailelerin ateşle ilgili bilgi düzeyleri ve ateşi düşürmek için izledikleri yöntemlerin araştırılması. Gereç ve yöntemler Mart-Nisan 2022 tarihleri arasında çocuklarını herhangi bir şikayetle hastanemiz acil servisine getiren ebeveynlere yüz yüze görüşme yöntemi ile 27 sorudan oluşan anket uygulandı. Bulgular Toplam 221 ebeveyn ile görüşüldü. Aileler en sık (%34,8) 38 0C ve üstünü ateş olarak kabul ediyordu. Ebeveynlerin 207’si (%93,7) ateş derecesinin hastalığın ciddiyeti ile ilişkili olduğunu düşünüyordu. Ailelerin 196’sında (%88,7) çocuğu ateşlendiğinde korkma, 199’unda (%90) çocuğu için ateşin zararlı olduğunu inanma ve 164’ünde (%74,2) ateşe bağlı havale geçireceği inancı vardı. Çocukları ateşlendiğinde 173’ü (%78,3) bir saatten önce tekrar ateş ölçtüğünü belirtti. Ailelerin 108’i (%48,9) 4 saat arayla, 109’u da (%49,3) dönüşümlü ateş düşürücü ilaç verdiğini ifade etti. Ebeveynlerin 172’si (%77,8) ateş düşürücü ilaç vermek için çocuğunu gece uyandırdığını ve 157’si (%71) çocuğuyla gece aynı odada kalıp sık ateş takibi yaptığını belirtti. Ailelerin 27’si (%12,2) çocuğu her ateşlendiğinde antibiyotik kullanıyor, 13’ü de (%5,9) evde açılmamış antibiyotik bulunduruyordu. Ailelerin 187’si (%84,6) ateş düşürücü uygulamaları doktorlardan öğrendiğini ifade etti. Lisans eğitim grubunda ateşin enfeksiyona bağlı olduğunu düşünme oranı, ateş düşürücü bilgileri kitaptan ve akademik yayınlardan öğrenme oranı temel eğitim grubuna göre istatistiksel olarak yüksekti (sırasıyla, p:0,019, p:0,010, p:0,005). Sonuç Ebeveynlerin ateş ile ilgili bilgi düzeyleri ve olumlu düşünceleri zamanla daha iyi bir düzeye gelmiş olsa da yine de bu konu ile ilgili doğru kaynaklardan toplumun bilgi düzeyinin arttırılması gerektiğini düşünmekteyiz.

To improve the temperature gradient of an electric furnace for the calibration of thermometers, a heat pipe assembly that uses a number of commercial water heat pipes, sealed in a cylindrical copper tube, was designed and tested. Twenty heat pipe tubes were arranged around the circumference of a cylindrical Cu or Al pillar well and attached to the pillar surface using a high-thermal-conductivity epoxy. This heat pipe assembly was installed in an electric furnace with a single heater, and its thermal characteristics were examined by measuring the temperature gradient using a PT100 resistance thermometer. Without any inserts in the single-zone electric furnace, the temperature gradient was disappointing at 0.6 °C·cm−1 at 225 °C and cannot be used for any purposes. However, the heat pipe assembly could enable a very uniform temperature gradient of 0.02 cm·°C−1 or better inside the Sn fixed-point cell, leading to a realization of the Sn fixed point with a flat melting and freezing plateau. From the experimental results, it was verified that this inexpensive heat pipe assembly gives improved thermal uniformity and thus is adequate for the calibration of thermometers, even for the realization of Sn and possibly in fixed points, without using an expensive multi-zone furnace or liquid bath. [ABSTRACT FROM AUTHOR]

Human body temperature is a fundamental physiological sign that reflects the state of physical health. It is important to achieve high-accuracy detection for non-contact human body temperature measurement. In this article, a Ka band (32 to 36 GHz) analog complex correlator using the integrated six-port chip is proposed, and a millimeter-wave thermometer system based on the designed correlator is completed for human body temperature measurement. The designed correlator utilizes the six-port technique to achieve large bandwidth and high sensitivity, and miniaturization of the correlator is achieved through an integrated six-port chip. By performing the single-frequency test and the broadband noise measurement on the correlator, we can determine that the dynamic range of input power of the correlator is −70 dBm to −35 dBm, and the correlation efficiency and equivalent bandwidth are 92.5% and 3.42 GHz, respectively. Moreover, the output of the correlator varies linearly with the input noise power, which reveals that the designed correlator is suitable for the field of human body temperature measurement. Then, a handheld thermometer system, with a size of 140 mm × 47 mm × 20 mm, is proposed using the designed correlator, and the measurement results show that the temperature sensitivity of the thermometer is less than 0.2 K. [ABSTRACT FROM AUTHOR]

An accurate knowledge of the optical properties of β-Ga2O3 is key to developing the full potential of this oxide for photonics applications. In particular, the dependence of these properties on temperature is still being studied. Optical micro- and nanocavities are promising for a wide range of applications. They can be created within microwires and nanowires via distributed Bragg reflectors (DBR), i.e., periodic patterns of the refractive index in dielectric materials, acting as tunable mirrors. In this work, the effect of temperature on the anisotropic refractive index of β-Ga2O3 n(λ,T) was analyzed with ellipsometry in a bulk crystal, and temperature-dependent dispersion relations were obtained, with them being fitted to Sellmeier formalism in the visible range. Micro-photoluminescence (μ-PL) spectroscopy of microcavities that developed within Cr-doped β-Ga2O3 nanowires shows the characteristic thermal shift of red–infrared Fabry–Perot optical resonances when excited with different laser powers. The origin of this shift is mainly related to the variation in the temperature of the refractive index. A comparison of these two experimental results was performed by finite-difference time-domain (FDTD) simulations, considering the exact morphology of the wires and the temperature-dependent, anisotropic refractive index. The shifts caused by temperature variations observed by μ-PL are similar, though slightly larger than those obtained with FDTD when implementing the n(λ,T) obtained with ellipsometry. The thermo-optic coefficient was calculated. [ABSTRACT FROM AUTHOR]

This paper presents a radiometric thermometer for non-invasive measurement of the internal body temperature. The proposed radiometric thermometer designed in 1.575 GHz band consists of a near-field probe and a high gain Dick radiometer. A phantom based on Agar material was developed to emulate the real tissue of skin and muscle for experiments. The measured results show that the active probe antenna provides additional 12.5 dB gain with noise figure less than 1dB, and the radiometer has a system gain of 50 dB and total noise figure of 1.738 dB at 1.575 GHz. The output voltage measured by the proposed 1.575 GHz microwave radiometer is 2.994 V when the water temperature is set to 25 °C, while it is 3.129 V when the water temperature is set to 80 °C. The study demonstrates that using the active probe connected to the radiometer can identify temperature difference of the body. [ABSTRACT FROM AUTHOR]

With the ability of monitoring both temperature and photothermal agents, the photoacoustic (PA) imaging is a promising guiding tool for the photothermal therapy (PTT). The calibration line which depicts the relative variation of PA amplitude with the temperature should be obtained before using PA thermometer. In existing study, a calibration line was generated based on the data from one spatial position, and used in the whole region of interesting (ROI). However, the generalization of this calibration line in ROI was not verified, especially for ROI with heterogeneous tissues. Moreover, the relationship between the distributions of photothermal agents and effective treatment area is not clear, hindering using photothermal agents’ distribution to optimize the administration-therapy interval. In this study, the distribution of effective photothermal agents and temperature in subcutaneously transplanted tumor mouse models were continuously monitored by 3D photoacoustic/ ultrasonic dual-modality imaging in 8 h after administration. With multiple micro-temperature probes in tumor and surrounding normal tissue, the PA thermometer was calibrated and evaluated at multiple spatial positions for the first time. The generalization in homologous tissue and tissue specificity in heterogeneous tissues of the PA thermometer calibration line were verified. Our study not only validated the effectivity of PA thermometer by proving the generalization of calibration line, but also removes a major obstacle that prevents applying the PA thermometer to a heterogeneous tissues ROI. The positive correlation between the proportion of effective treatment area and the proportion of effective photothermal agent area in the tumor was observed. Since the latter can be monitored with fast PA imaging, PA imaging can be employed as a convenient tool for seeking optimal administration-treatment interval.

Background and Objectives: Placement of skin heat probe for continuous monitoring of infant body temperature is one of the main components of neonatal care. Therefore, managing the body temperature of newborns under radiation warmers requires a lot of attention from nurses to prevent unwanted complications. The aim of this study was to determine the appropriate connection point of skin probe for temperature control in premature infants under radiant heating admitted to neonatal intensive care units in Hamadan in 2020. Materials and Methods: In this cross-sectional descriptive study, 140 infants aged 34 to 37 weeks admitted to neonatal intensive care units in Hamadan in 2020 who met the inclusion criteria were included in the study by available methods. The incubator temperature was set at 37 degrees and it was the same for all infants. For each infant, the probe was attached to the forehead, chest between the ribs, right axillar, arms adjacent to the nipple, right armpit, back of the legs, and upper thigh, respectively. The baby's temperature displayed on the digital warmer screen was recorded two minutes later. A researcher-made checklist was used to record the data and the data were analyzed using t-test and Paired t-test. Results: The correlation between left and right axillary was highest, meaning that the best location for the incubator thermometer probe, after the left axillary is the right axillary (r = 0.91, P = 0.001). Conclusions: The most suitable place for connecting skin probe for temperature control after left axillary, is the right axillary.

In this work, we design and simulate a 4-bit Thermometer architecture based Current Steering Digital to Analog Converter (TCS-DAC). Two versions of TCS-DAC have been designed, one employing the conventional MOSFET and the other employing CNTFET, both at 32 nm technology node. The comparative analyses of various performance measuring parameters like Integral non-linearity (INL), differential nonlinearity (DNL) glitch energy, power consumption etc. have been comprehensively performed for the two proposed DACs. A significant improvement in these parameters have been achieved in the CNTFET based TCS-DAC. A comparative analysis of the proposed TCS-DAC has also been done with our earlier designed binary weighted CS-DAC. Further, an 8-bit segmented CS-DAC has been designed by employing the Thermometer CS-DAC designed in this work as the binary weighted CS-DAC discussed earlier. The proposed 8-bit segmented CS-DAC is implemented in both CMOS and CNTFET technology. The static and dynamic performance of segmented CS-DAC has been studied thoroughly at 0.9 V power supply. It has been observed that in the proposed CNTFET based segmented CS-DAC, INL and DNL have got decreased by 97.15% and 99.06% respectively in comparison to the conventional MOS based CS-DAC. Further, the dynamic performance measuring parameter like Spurious Free Dynamic Range (SFDR) has increased by 109% in comparison to the conventional DAC and the power consumption is 129 µW in the proposed DAC. The glitch power in CNTFET based DAC has got reduced by 61.43% in comparison to that in conventional CMOS based DAC. [ABSTRACT FROM AUTHOR]

Temperature is an important physical parameter and plays a significant role in scientific research, the detection of which cannot be too crucial to study. In order to reduce the interference of the external environment on the detection of temperature and improve the accuracy of the detection results, a multi-parameter detection method using several optical signals was proposed. Here, a novel porous metal–organic framework (MOF), Zn-CYMPN, was synthesized and structurally characterized. Then, fluorescent organic dyes, either DPEE or DPEM, were encapsulated into the pores of Zn-CYMPN independently. The successful synthesis of the composites Zn-CYMPN⊃DPEE or Zn-CYMPN⊃DPEM could easily introduce other fluorescent centers into the original material and made it more convenient to realize multi-parameter temperature detection. More specifically, when the temperature changed, the maximum fluorescent emission wavelength (W) and the maximum optical intensity (I) of the Zn-CYMPN⊃DPEE/DPEM both showed good linear responses with temperature over a wide range, indicating that the composites were highly sensitive thermometers with multi-parameter temperature readouts. In addition, the quantum efficiency and thermal stability of the organic dyes, which bother every researcher, were improved as well. [ABSTRACT FROM AUTHOR]

The outbreak of citrus brown spot because of Alternaria is one of the most destructive citrus diseases. Additionally, Alternaria species produce highly toxic mycotoxins. Mass screening is a valid method to control the spread of Alternaria. Morphological analysis and polymerase chain reaction combined with gene-sequencing technique are the most commonly used techniques for detecting Alternaria. However, they are limited by either low convenience and accuracy or low instrument accessibility and high cost. To balance the convenience, accuracy, test availability, and low cost, we develop a CRISPR/Cas12a-based photothermal platform for the portable detection of Alternaria genes using a thermometer. Using this platform, the Alternaria genes from the synthetic sequences and cultured fungus of citrus, tomato, and apple can be detected using a thermometer with a detection limit of 1.5 pM. With the aid of the CRISPR/Cas12a system, citrus-associated Alternaria can be specifically differentiated from other citrus disease-associated microorganisms. When the photothermal platform is applied to analyze the citrus fruit samples collected in the field, good-consistency results are obtained with the gene-sequencing technology. The excellent performance of this portable method shows that it can be applied to screen for Alternaria in resource-poor settings. • A portable method based on the CRISPR/Cas12a system for citrus-associated Alternaria genes was developed. • This method relied on the effective photothermal conversion of oxTMB under 808 nm laser irradiation. • A thermometer was employed to record the detection signal. • Alternaria genes from synthetic sequences, cultured fungus, and citrus fruit samples were analyzed. • Excellent specificity for other citrus disease-related microorganisms was obtained. [ABSTRACT FROM AUTHOR]

In the context of the COVID-19 pandemic, wearable sensors are important for early detection of critical illness especially in COVID-19 outpatients. We sought to determine in this pilot study whether a wearable in-ear sensor for continuous body temperature and heart rate monitoring (Cosinuss company, Munich) is sufficiently accurate for body temperature and heart rate monitoring. Comparing with several anesthesiologic standard of care monitoring devices (urinary bladder and zero-heat flux thermometer and ECG), we evaluated the in-ear sensor during non-cardiac surgery (German Clinical Trials Register Reg.-No: DRKS00012848). Limits of Agreement (LoA) based on Bland–Altman analysis were used to study the agreement between the in-ear sensor and the reference methods. The estimated LoA of the Cosinuss One and bladder temperature monitoring were [-0.79, 0.49] °C (95% confidence intervals [-1.03, -0.65] (lower LoA) and [0.35, 0.73] (upper LoA)), and [-0.78, 0.34] °C (95% confidence intervals [-1.18, -0.59] (lower LoA) and [0.16, 0.74] (upper LoA)) of the Cosinuss One and zero-heat flux temperature monitoring. 89% and 79% of Cosinuss One temperature monitoring were within ± 0.5 °C limit of bladder and zero-heat flux monitoring, respectively. The estimated LoA of Cosinuss One and ECG heart rate monitoring were [-4.81, 4.27] BPM (95% confidence intervals [-5.09, -4.56] (lower LoA) and [4.01, 4.54] (upper LoA)). The proportion of detection differences within ± 2BPM was 84%. Body temperature and heart rate were reliably measured by the wearable in-ear sensor. [ABSTRACT FROM AUTHOR]