11 results on '"Meng Meng Hu"'
Search Results
2. Circumstances of falls and fall-related injuries among frail elderly under home care in China
- Author
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Hong-Ying Pi, Meng-Meng Hu, Jie Zhang, Pei-Pei Peng, and Dan Nie
- Subjects
Circumstances ,Falls ,Frail ,Elderly ,Home care ,Nursing ,RT1-120 - Abstract
This exploratory study investigated the circumstances of falls and fall-related injuries among frail elderly people under home care. A convenience sample of 500 frail elderly (60–99 years old) from the Wanshoulu and Yuyuantan communities in Beijing's Haidian District during February 2013 and March 2014. Fall circumstances and related injuries were characterized by detailed interviews and questionnaires. The article reports the results of a study that the overall fall incidence was 41.5%, and higher for females than males. Falls mainly occurred in individuals who were over 80 years old (50.0%) and indoors (67.9%). The percentage of subjects who experienced a combined injury after the fall was 56.3%, whereas 19.0% fell causes a fracture. Approximately 35% of the subjects were hospitalized, and 27.6% of the subjects recovered more than 30 days. Results indicate that, falls in the frail elderly caused serious damage, and fall-related circumstances should be a great concern in this population.
- Published
- 2015
- Full Text
- View/download PDF
3. Enhancing WLCSP Reliability through Stress Relief Methods
- Author
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Yan-Yan Zhu, Xin-Rong Liu, Ya-Wei Dai, and Meng-Meng Hu
- Subjects
Stress relief ,Stress (mechanics) ,Reliability (semiconductor) ,Fabrication ,Chip-scale package ,Computer science ,Lead (electronics) ,Die (integrated circuit) ,Finite element method ,Reliability engineering - Abstract
Wafer-level chip-scale package (WLCSP) has attract broad interest from fundamental sciences to industrial applications due to its advantages in ease of fabrication, low cost and real die size packaging, etc. However, in the advanced WLCSP process, the stress between the package and the die is the key challenge, especially in the reliability tests such as thermal shocking, the stress can lead to defects such as cracking. In this paper, several parameters including top metal (TM) and polyimide (PI) are studied both through simulations and board-level reliability testing. The result revealed that, by reducing local metal density gradient and increasing PI thickness, stress relief region can be constructed to extend the fatigue life of WLCSP. An enhancement of more than 2× in thermal shocking reliability was achieved. This work provides a design guideline for structure optimization to satisfactory WLCSP reliability.
- Published
- 2020
4. Long-term follow-up for patients with nonprogressive epilepsia partialis continua in a single center in China
- Author
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Song Yan, Yonghong Liu, Xiaoli Wang, Lei Ma, Yanchun Deng, and Meng-Meng Hu
- Subjects
Adult ,Male ,0301 basic medicine ,Topiramate ,China ,medicine.medical_specialty ,Adolescent ,Epilepsia partialis continua ,Epilepsia Partialis Continua ,Single Center ,Head trauma ,03 medical and health sciences ,Epilepsy ,0302 clinical medicine ,Physiology (medical) ,medicine ,Craniocerebral Trauma ,Humans ,Child ,business.industry ,Electroencephalography ,General Medicine ,medicine.disease ,Myotonia ,Surgery ,Facial muscles ,030104 developmental biology ,medicine.anatomical_structure ,Neurology ,Etiology ,Encephalitis ,Female ,Neurology (clinical) ,business ,030217 neurology & neurosurgery ,medicine.drug - Abstract
Epilepsia partialis continua (EPC) is a rare variant of epilepsy. Cases from China are rare. We present a case series of seven patients to analyze its clinical features, imagining findings, etiology, drug use, and long-term outcome in a single epilepsy center. We made assessments of drug effects twice (Stage I - when they left our hospital; Stage II in March 2017 - by telephone interviews to rate their long-term outcome). The mean duration of the second follow-up was 4.8years. Of the seven patients, four patients characterized motor and sensory EPC and three motor EPC. Local distributions of EPC were: the left face (2 patients), right face (1 patient), left leg (3 patients), right leg and arm (1 patient). CT/MR was abnormal in four, normal in two, and not available in one patient. EEG abnormalities commonly consisted of spike-waves, sharp-waves (or) slow wave activity, and periodic lateralized epileptiform discharges. They were all nonprogressive EPC (encephalitis: 2; tumor: 2; head trauma: 1; and not found in 2 cases). In our observations, topiramate might be effective in patients with facial muscles continuous jerking, while carbamazepine in cases of limbs continuous myotonia. Our cases had favorable long-term outcome. Thus, our cases' etiology differentiated from other regions. Some drugs used by referring to EPC distributions might help to control EPC and their outcome were usually favorable.
- Published
- 2017
5. Circumstances of falls and fall-related injuries among frail elderly under home care in China
- Author
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Pei-Pei Peng, Dan Nie, Jie Zhang, Hong-Ying Pi, and Meng-Meng Hu
- Subjects
lcsh:RT1-120 ,Gerontology ,education.field_of_study ,lcsh:Nursing ,business.industry ,Incidence (epidemiology) ,Population ,Convenience sample ,Home care ,Frail ,Elderly ,Medicine ,Falls ,Frail elderly ,education ,business ,China ,General Nursing ,Circumstances - Abstract
This exploratory study investigated the circumstances of falls and fall-related injuries among frail elderly people under home care. A convenience sample of 500 frail elderly (60–99 years old) from the Wanshoulu and Yuyuantan communities in Beijing's Haidian District during February 2013 and March 2014. Fall circumstances and related injuries were characterized by detailed interviews and questionnaires. The article reports the results of a study that the overall fall incidence was 41.5%, and higher for females than males. Falls mainly occurred in individuals who were over 80 years old (50.0%) and indoors (67.9%). The percentage of subjects who experienced a combined injury after the fall was 56.3%, whereas 19.0% fell causes a fracture. Approximately 35% of the subjects were hospitalized, and 27.6% of the subjects recovered more than 30 days. Results indicate that, falls in the frail elderly caused serious damage, and fall-related circumstances should be a great concern in this population.
- Published
- 2015
6. Accumulation and Excretion of Cadmium in Three Successive Generations of Spodoptera exigua (Lepidoptera: Noctuidae) and Impact on the Population Increase
- Author
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Hong-Hua Su, Yi-Zhong Yang, Tim Harvey-Samuel, and Meng-Meng Hu
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Male ,Population ,chemistry.chemical_element ,Moths ,Excretion ,Lepidoptera genitalia ,Animal science ,Beet armyworm ,Botany ,Exigua ,Animals ,Population Growth ,education ,Cadmium ,education.field_of_study ,Ecology ,biology ,fungi ,Pupa ,General Medicine ,biology.organism_classification ,chemistry ,Larva ,Insect Science ,Noctuidae ,Environmental Pollutants ,Female - Abstract
Nowadays, heavy metal pollution has become more and more serious. Cadmium is one of the heavy metals that have caused serious pollution. Spodoptera exigua Hubner (Lepidoptera: Noctuidae), one of important agricultural pests, has broken out more frequently in recent years. In this study, accumulation at different developmental stages and excretion of Cd were detected, and effect of cadmium (Cd concentrations were 0.2, 0.8, 3.2, 12.8, and 51.2 mg/kg, respectively) on three successive generations of beet armyworm was also studied using life table in the laboratory. Results showed that Cd2+ contents were significantly different when S. exigua was reared under different Cd2+ concentrations in the same generation in a significant dose-dependent manner. The concentration of Cd2+ increased with extension of stress time. Cd2+ concentration at different developmental stages was different, that is, larvae > pupa > adult. After emergence, Cd2+ concentration in both females and males decreased gradually, but that in paired adults decreased to a greater extent than that in unpaired ones. Beet armyworm could excrete heavy metals by means of faeces, prepupa exuviate, and puparium. Life table of the laboratory population was constructed, which showed that low doses of cadmium promoted the increase of population, whereas high doses inhibited the increase, meanwhile, with the extension of exposure length, the index of population trend (I) declined more rapidly. The study might provide references for the long-term and objective assessment of heavy metal pollution and its effect on the populations of important agricultural pests.
- Published
- 2014
7. The IT Capabilities Driven Model and Evolutionary Model: Based on the Integration View of Competitive Strategy, Resource-Based View and Dynamic Capabilities
- Author
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Li Tao Zhang, Meng Meng Hu, and Chao Su
- Subjects
Structure (mathematical logic) ,Engineering ,Knowledge management ,business.industry ,Process (engineering) ,Core competency ,General Medicine ,Competitive advantage ,Resource-based view ,Systems engineering ,Strategic fit ,Capability system ,Dynamic capabilities ,business - Abstract
The IT capabilities driven model and the IT capabilities evolutionary model which based on the integration of competitive strategy, resource based view and dynamic capabilities view are built. This driven model studies the improvement and affects of IT capabilities for performance and core competencies. The driven model explains the process of IT capabilities which includes the classifications of IT capabilities, the external environment chances and threat, induction and feedback, integration and reconstruction of resources, the strategy fit and integration. The IT capabilities evolutionary model is abstracted from the process of driven model, and it explains the IT capabilities evolve into new IT capabilities after a cyclic process of old IT capabilities effects. The two models also build a structure of IT capabilities which can be used in assessing the enterprise IT capability system.
- Published
- 2014
8. Risk Factors for In-Hospital Complications of Fall-Related Fractures among Older Chinese: A Retrospective Study
- Author
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Jing Wang, Pei-Pei Peng, Dan Nie, Yuan Gao, Meng-Meng Hu, and Hong-Ying Pi
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Male ,medicine.medical_specialty ,Article Subject ,Iatrogenic Disease ,lcsh:Medicine ,Logistic regression ,General Biochemistry, Genetics and Molecular Biology ,Fractures, Bone ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,Internal medicine ,Humans ,Medicine ,Dementia ,030212 general & internal medicine ,Risk factor ,Aged ,Retrospective Studies ,Aged, 80 and over ,Univariate analysis ,General Immunology and Microbiology ,business.industry ,Incidence (epidemiology) ,lcsh:R ,Retrospective cohort study ,General Medicine ,Middle Aged ,medicine.disease ,Comorbidity ,Physical therapy ,Accidental Falls ,Female ,business ,Complication ,030217 neurology & neurosurgery ,Research Article - Abstract
Purpose.The aim of this study was to investigate the risk factors and the efficacy of the preventive measurements for the in-hospital complications of fall-related fractures.Methods. The data on older Chinese patients with fall-related fractures were collected, including information on the patients, diseases, and preventive measurements. The potential risk factors for the in-hospital complications included health status on admission, comorbidity, fractures, preventive measures of the complications, and drugs use for the comorbidity. After univariate analyses, multivariate logistic regression analyses were applied to investigate the impact of the potential risk factors on the number of the complications and each individual complication, respectively, and the efficacy of the preventive measurements.Results.A total of 525 male and 1367 female were included in this study. After univariate analyses, multiple logistic regression showed that dementia, pneumonia, antidepressant, postural hypotension, and cerebral infarction could increase the incidence and number of comorbidities. Meanwhile, dementia has shown the strongest association with each individual complication.Conclusions.Different combinations of comorbidity, medication use, and preventive measurements were related to the in-hospital complications of fall-related fractures. Dementia emerged as the most important risk factor for these complications, while most of the preventive measurements could not reduce their incidences.
- Published
- 2016
9. [Accumulation of lead in Spodoptera exigua (Hübner) and its impact on the population]
- Author
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Meng-Meng, Hu, Wen-Chen, Cai, Hong-Hua, Su, and Yi-Zhong, Yang
- Subjects
China ,Lead ,Larva ,Pupa ,Animals ,Environmental Pollutants ,Female ,Spodoptera ,Diet - Abstract
The heavy metals pollution is one of the ecological problems which have been paid close attention to Spodoptera exigua Hübner, one of the key pests on vegetables and cotton in the Yangtze River and its southern area in China, has broken out more frequently in recent years. In this study, accumulation of Pb2+ in S. exigua and its excretion were detected when fed with artificial diets with different Pb2+ concentrations (0.3, 1.2, 4.8, 19.2 and 76.8 mg x kg(-1), respectively). Life table was constructed according to the survival and growth of different stages of S. exigua. The effect of lead on three successive generations of beet armyworm was studied using the life table in the laboratory. It was found that the Pb2+ contents were significantly different when S. exigua was reared at different Pb2+ concentrations in the same generation in a significant dose-dependent manner. The concentration of Pb2+ increased with prolonging the stress time at the same time. The Pb2+ concentrations at the three developmental stages of beet armyworm followed the order of larvaeadultpupa. The beet armyworm could excrete heavy metals by means of faeces, prepupa exuviate and puparium, and the concentrations of Pb2+ in faeces and prepupa exuviate were far higher than in puparium. According to the survival rates of different developmental stages, the female ratios and the egg numbers, the laboratory population life table was constructed. It showed that low doses of Pb2+ promoted the growth of the population, and high doses inhibited the growth, and the index of population trend (I) declined more rapidly with the increase of stress time. The study could provide references for long-term and objective assessment of heavy metal hazard and its effect on the populations of important agricultural pests.
- Published
- 2014
10. Transcriptome and 16S rRNA analysis revealed the response of largemouth bass (Micropterus salmoides) to Rhabdovirus infection
- Author
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Hui Fei, Shun fa Yi, Hui min Zhang, Yan Cheng, Ya qi Zhang, Xiang Yu, Shi chao Qian, Meng meng Huang, and Shun Yang
- Subjects
Micropterus salmoides ,rhabdovirus ,response ,transcriptome ,microbiome ,Immunologic diseases. Allergy ,RC581-607 - Abstract
To better understand the response of largemouth bass (Micropterus salmoides) to Micropterus salmoides rhabdovirus (MSRV) infection, we investigated the intestinal bacterial flora and transcriptome profile of fish at 72 hours post-infection (hpi). Total of 1574 differentially expressed genes (DEGs) were identified in largemouth bass spleen following MSRV infection, including 573 upregulated and 1001 downregulated genes. KEGG and GO enrichment analysis revealed that upregulated genes were enriched in certain antiviral related signaling pathway, including NOD-like receptor (NLR), RIG-I like receptors (RLR) and regulation of the interferon (IFN)-γ-mediated signaling pathway, whereas some immune-related DEGs enriched in focal adhesion (FA) and ECM-receptor interaction(ECM-RI) were downregulated, as well as genes associated with metabolic processes, such as peroxisome proliferator-activated receptors (PPAR), adipocytokine signaling pathway, Glycerolipid and Retinol metabolism. Furthermore, the principal component analysis (PCA) and phylogenetic analysis revealed that MSRV infection significantly affected the microbiota of largemouth bass intestine; the LEfSe analysis showed that relative abundances of Streptococcus were significantly increased, while the content of Akkermansia, Enterococcus and Lactobacillus were remarkably decreased in the fish intestine following MSRV infection. Additionally, a high correlation was determined between the expressions of interferon-related upregulated genes and the relative abundance of Streptococcus by redundancy analysis (RDA). These results collectively illustrated that intestinal microbiota composition might be associated with the immune-related gene expression in largemouth bass in response to MSRV infection.
- Published
- 2022
- Full Text
- View/download PDF
11. [The expression and significance of TLR4, MyD88 and NF-κB mRNA in mouse lymph node of experimental autoimmune myositis]
- Author
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Hong-ya, Zhang, Juan, Kang, Wen-juan, Han, Meng-meng, Hu, and Hong-ge, Jia
- Subjects
Toll-Like Receptor 4 ,Mice ,Mice, Inbred BALB C ,Myeloid Differentiation Factor 88 ,Linear Models ,NF-kappa B ,Animals ,Female ,Lymph Nodes ,RNA, Messenger ,Nervous System Autoimmune Disease, Experimental - Abstract
To investigate TLR4, MyD88 and NF-κB mRNA levels in mouse lymph node with experimental autoimmune myositis(EAM)and determine the role of TLR4 in autoimmune myositis.Thirty femal BALB/c mice were randomly divided into five groups (n=6 animals per group): group 1 was the control, while animals in other four groups were killed at different time point: group 2 in the first week, group 3 in the second week, group 4 in the third week and group 5 in the fourth week since they had been given myosin for preparing EAM. The expressions of TLR4, MyD88 and NF-κB mRNA were measured with real-time fluorescent quantitative polymerase chain reaction.(1)The expressions of TLR4, MyD88 and NF-κB mRNA in each EAM group were significantly high compared with those in the normal control group, which was significantly highest in group 3 of all(P0.01) and significantly higher in group 4 than in group 5(P0.01).(2)The expression level of TLR4 mRNA had significant positive correlations with the expressions of MyD88 mRNA and NF-κB mRNA(r=0.906, r=0.967, P0.01), and the latter two also had significant positive correlations(r=0.919, P0.01).TLR4 played an important role in the development of autoimmune myositis and run its function mainly by MyD88-dependent pathway that could activate NF-κB for promoting the release of inflammatory factors.
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- 2012
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