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2023年7月27日，在湖南南山国家公园开展两栖爬行动物资源调查时，在针阔混交林旁的马路采集到白环蛇属（Lycodon）标本1号（标本号HNNU 230727；26°15′2″ N，110°15′29″ E；海拔532 m），并基于线粒体细胞色素b基因（Cyt b）片段重建白环蛇属系统发育关系。结果显示：该标本与花坪白环蛇（L.cathaya）模式标本聚为一支，遗传距离为0.1%。综合形态特征及Cyt b基因序列的分子系统关系，确定该标本为游蛇科（Colubridae）白环蛇属花坪白环蛇，系湖南省蛇类新纪录。

通过对模块单元的分析和研究，提出了模块尺寸的选型建议，并通过不同功能模块的组合，形成典型的模块化宿舍、住宅、办公、学校等建筑方案。基于此构建了模块化钢结构技术体系，并进行理论分析、试验研究、数值模拟，研发适用于模块单元间的拼接连接节点，提出了模块化建筑结构体系的标准化设计方法，并探究各类模块建筑抗侧体系在不同抗震设防烈度下的适用高度。通过系统研究模块单元的设计、制造、运输、安装等全过程，形成了模块化钢结构建筑产业化的成套技术，并以示范性生产基地、示范工程及系列化产品，加快推动模块化钢结构建筑的市场规模化应用。

近年来，轻度认知障碍(Mild cognitive impairment, MCI)作为阿尔茨海默病（Alzheimer’s disease,AD）的一个早期症状引发关注，对其进行早期干预具有积极意义。现有人群实验、动物实验及细胞实验多方面研究表明，多不饱和脂肪酸(PUFAs)中的ω-3多不饱和脂肪酸（ω-3 PUFAs）可以改善炎症反应，影响轻度认知障碍的发生发展。但ω-6多不饱和脂肪酸（ω-6 PUFAs）的相关代谢产物既包含抗炎物质，又有促炎物质，机制较为复杂，目前研究具有争议性。综述了两种多不饱和脂肪酸对轻度认知障碍作用的机制，探讨饮食营养对改善轻度认知障碍的意义，为多不饱和脂肪酸改善轻度认知障碍以及相关营养干预提供依据。In recent years, mild cognitive impairment (MCI) has attracted attention as an early symptom of Alzheimer’s disease (AD), and its early intervention is of positive significance. Existing studies in population, animal and cell experiments have shown that ω-3 polyunsaturated fatty acids (ω-3 PUFAs) in polyunsaturated fatty acids (PUFAs) can improve inflammation, and affect the ocurrance and development of MCI. However, the related metabolites of ω-6 polyunsaturated fatty acids (ω-6 PUFAs) contain both anti-inflammatory substances and pro-inflammatory substances, and the mechanism is relatively complicated, and current research is controversial. The mechanisms of the effects of two kinds of polyunsaturated fatty acids on MCI were reviewed, and the significance of dietary nutrition in improving MCI was explored, so as to provide a basis for polyunsaturated fatty acids to improve MCI and related nutritional interventions.

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GARP is a plant specific transcription factor family and plays a key role in plant growth, development, and abiotic stress response. In order to provide basic information for a comprehensive understanding of GARP transcription factors in Lilium, and laid a foundation for exploring the growth and development mechanism of bulbs in Lilium, in this study, based on the transcriptome data of Next-generation sequencing and Third-generation sequencing of Lilium, identification and expression analysis of GARP family members were conducted. The results indicated that a total of 34 GARP proteins were identified in transcriptome data, all the GARP proteins were hydrophilic, 68% of which were acidic proteins, and 94% were unstable proteins. Based on the phylogenetic analysis, Lilium GARPs were clustered into five subfamilies: ARR-B, GLK, NIGT1/HRS1/HHO, PHR1/PHL1, and KAN, and they were annotated with functions on growth and development, biological clock regulation, flowering transformation, hormone transport, abiotic stress and other processes. The ARR-B subfamily members that played important roles in bulb development were analyzed by qRT-PCR, and the results showed that LhGARP33, LhGARP30, and LhGARP3 may play important roles in bulb development. The LhGARP3 and LhGARP30 were successfully cloned and their amino acid sequences exhibited the typical ARR-Bs phosphate receptor domain (REC) and metal and phosphorylation binding sites. Spatial expression patterns of ARR-B I subgroup in flowers, leaves, and bulbs were analyzed and the results revealed that LhGARP5 had the highest expression in leaves, while LhGARP31 had the highest expression in flowers, LhGARP33, LhGARP30 and LhGARP3 had the basically consistent expression characteristics, the highest expression in bulbs, indicating that they may play a major role in bulb development as a key gene. [ABSTRACT FROM AUTHOR]

Copyright of Acta Petrologica et Mineralogica / Yanshi Kuangwuxue Zazhi is the property of Acta Petrologica et Mineralogica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Chinese Journal of Inorganic Analytical Chemistry / Zhongguo Wuji Fenxi Huaxue is the property of Beijing Research Institute of Mining & Metallurgy Technology Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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[Objective] To explore the response of different endophytic bacterial communities to cadmium (Cd) stress and their impact on host Cd accumulation. [Method] Taking the endophytic bacteria of C. arvense as the research object, the community structure was reshaped through soil sterilization, and high-throughput 16S rDNA gene sequencing was used to clarify the changes in the community structure of different endo- phytic bacteria of C. arvense under Cd stress and its impact on the enrichment characteristics of C. arvense. [Result] Endophytic reshaping (ST) treatment significantly changed the structure of endophytic bacterial communities and significantly increased their diversity. Under Cd stress, some bacteria that could promote plant growth, such as Sphingomonas and Devosia became dominant groups. The biomass of C. arvense in cadmium stress treatment was significantly higher than that in the control group, with a significant increase in root and leaf biomass under Cd stress (P<0.05). The reshaping of endophytic bacteria (ST) significantly increased the cadmium content and accumulation in C. arvense (P<0.05). [Conclusion] Different endophytic bacterial communities within the C. arvense plant have different responses to Cd stress and affect its ability to accumulate Cd. [ABSTRACT FROM AUTHOR]

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[Objective] To investigate the growth and accumulation characteristics of C. arvense under heavy metal Cd stress and the impact on the rhizosphere bacterial community. [Method] Through greenhouse potting experiments, we compared the differences in growth and Cd accumulation characteristics of C. arvense in soils with different Cd contents (0, 4 and 16 mg / kg). We utilized high-throughput sequencing of 16S rDNA genes to determine the changing rules of the rhizosphere bacterial community structure of C. arvense under different soil Cd gradients. [Result] The responses of C. arvense to Cd stress in the aerial part and root part were significantly different: plant height, basal diameter and the number of leaves all decreased with increasing soil Cd gradients, but root length increased first and then decreased with increasing soil Cd gradients. Cd stress showed a “low-promoting and high-suppressing” effect on the biomass of C. arvense. The biomass of C. arvense grown in 4 mg / kg soil was 52. 68% higher than that of the control group(0 mg / kg). C. arvense had excellent Cd accumulation and transport capacity, with a bioaccumulation factor greater than five and a translocation factor greater than four. Cd stress had an effect on the rhizosphere bacterial community composition, and there is a significant difference in the relative abundance of dominant phyla in soil with different Cd gradients. [Conclusion] C. arvense can grow in Cd-containing soil (less than 16 mg / kg) and has an excellent accumulation ability, making it a potential Cd contaminated phytoremediation resource, and its rhizosphere bacterial community composition also responds to Cd stress. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To explore the potential association between blood lipid levels and noise -induced hearing loss (NIHL), providing a basis for guiding noise-exposed workers in controlling their blood lipid levels. Methods Using cluster sampling, noise -exposed workers from an auto parts manufacturing company who participated in the 2023 occupational health examination were selected as subjects. Information regarding their demographics, occupational noise exposure, and protective measures was collected. Pure-tone audiometry tests and blood lipid level measurements were conducted. Logistic regression models were employed to analyze the influencing factors of hearing impairment. Results Among 792 subjects, 242 exhibited hearing impairment with an occurrence rate of 30.56%, and 264 exhibited abnormal blood lipid levels with an occurrence rate of 33.33%. Multivariate logistic regression analysis revealed that compared to workers exposed to qualified noise levels, those exposed to higher -level (above the occupational exposure limit) noise had a 1.713 -fold increased risk of hearing loss (P < 0.05). For each additional year of age and each 1 mmol/L increase in triglycerides (TG), the risk of hearing loss increased by 1.059 and 1.135 times, respectively (both P < 0.05). Conclusions The prevalence of hearing loss among workers in this auto parts manufacturing company was relatively high. Active measures should be taken to control workplace noise levels and encourage workers to manage their blood lipid levels, particularly by reducing serum TG levels. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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[Objective] Response surface methodology was used to optimize the extraction process of total saponins from Pfaffia glomerata, providing reference for its further development and utilization. [Method] Taking amaranthaceous plant Pfaffia glomerata as the research object, total saponins were extracted using ultrasound assisted deep eutectic solvent method. Through single factor experiments, the molar ratio of urea to choline chloride, water content, liquid-solid ratio and extraction time were investigated, the total saponin yield was used as the evaluation index, and the Box-Behnken response surface methodology was used to optimize the extraction process of total saponins from Pfaffia glomerata. [Result] The optimal process for ultrasound-assisted deep eutectic solvents extraction of total saponins from Pfaffia glomerata was established with the following parameters: urea to choline chloride ratio of 1:1, water content of 38%, liquid-material ratio of 18:1 (mL:g), and extraction time of 37 minutes. Under the conditions, the total saponin yield achieved was 6.26%. [Conclusion] This method has high extraction efficiency, good repeatability and simple operation, and can be used for the extraction of total saponins from Pfaffia glomerata. [ABSTRACT FROM AUTHOR]

The aim of this study was to compare the effects of different iron sources on the growth performance, coat development, blood routine indexes and apparent digestibility of iron in weaned piglets. The experiment was conducted with 144 healthy 28-day-old "Du×Chang×Da" ternary crossbred weaned piglets [body weight (7.14±0.76) kg], which were randomly divided into 4 treatment groups, with 6 replicates (pens) for each treatment and 6 piglets for each replicate. The control group was fed a basal diet (CON group), and the experimental group was fed diets supplemented with 100 mg/kg of ferrous sulfate monohydrate (FeSO4 group), ferric cassava polysaccharide (Dt Fe group), and ferric dextran (Dex Fe group), respectively, in the basal diet. The pre trialperiod is 7 days, and themain trial pe‐riod is 28 days. The data showed that ① compared with FeSO4 group, the average daily feed intake of piglets in Dex Fe group was significantly higher (P<0.05), Dt Fe group was significantly lower (P<0.05), and other indexes were not significantly different (P>0.05). ② Addition of three different iron sources to the diet significantly increased piglets' coat index on day 7 (P<0.05), and addition of organic iron sources significantly increased the degree of smoothness of piglets' hair (P<0.05); enhanced the degree of redness of the skin on day 21 (P<0.05); and both the degree of smoothness of the piglets' hair and the index of the piglet's hair were significantly increased on day 28 (P<0.05). ③ Compared with the FeSO4 group, piglets in the Dt Fe group showed a significant increase in the number of red blood cells, hemoglobin concentration and erythrocyte pressure area (P<0.05). ④ Addition of all three iron sources significantly increased fecal and serum iron content in piglets (P<0.05). Compared with the FeSO4 group, piglets in the Dt Fe group had significantly higher serum iron content and apparent digestibility of iron (P<0.05), and piglets had significantly lower fecal iron content (P<0.05). In conclusion, the addition of different iron sources to the diets could improve the growth performance of weaned piglets, and compared with the addition of ferrous sulfate, the organic iron sources were more effective in regulating the blood routine of piglets, improving the development of the skin and coat, and increasing the apparent digestibility of iron. [ABSTRACT FROM AUTHOR]

A method for predicting surface vibrations induced by blasting in open-pit mines is proposed, based on Self-organizing Neural Network (SONN) and several commonly used metaheuristic algorithms to improve the prediction accuracy of the SONN model. These algorithms include Manta Ray Foraging Optimization (MRFO), Hunger Games Search (HGS), Aquila Optimization (AO), and Naked Mole-rat Algorithm (NMRA). The k-fold cross-validation was employed to determine the optimal parameters for the algorithms, which were then used to retrain the model for predicting blast-induced surface vibrations. A case study of a domestic open-pit mine was conducted to validate the effectiveness of the proposed method. The research results indicate that all 4 models accurately predict blast-induced surface vibrations. Among them, the prediction accuracy and reliability are ranked from highest to lowest as follows: MRFO-SONN model>HGS-SONN model>NMRA-SONN model>AO-SONN model. The MRFO-SONN model is recommended for predicting surface vibrations induced by blasting activities. [ABSTRACT FROM AUTHOR]

Sharding mechanism is a way to address performance bottlenecks in blockchain such as low throughput and high. communication complexity. However, in existing sharding systems, transactions across shards can be processed in parallel, inevitably leading to frequent cross-shard transactions which increase confirmation times compared to intra-shard transactions. As the number of cross-shard transactions increases, the efficiency of the sharding system decreases. This paper proposed a dy- namic sharding adaptive model to enhance the throughput and efficiency of blockchain platforms. By dynamically splitting data into the same shard based on transaction data correlation, multiple highly correlated shards were adaptively merged into the same shard. To validate the dynamic sharding adaptive model for blockchain, it conducted experiments using Hyperledger. Experimental results demonstrate that the proposed model can enhance the scalability of blockchain sharding systems while en- suring security and consistency. [ABSTRACT FROM AUTHOR]

The 1,2-difunctionalization of olefins via radical pathways is a crucial method in organic synthesis for the direct formation of C―X (X = C, N, O, etc.) bonds from olefins. This approach offers several advantages, including high regioselectivity, step economy, and atom economy, making it compatible with the principles of green chemistry. The development of simple and efficient methods for constructing carbon-oxygen bonds is a significant area of interest in organic chemistry due to the prevalence of organic functional compounds containing these bonds. This review summarizes the recent progress in constructing carbon-oxygen bonds concurrently with carbon-carbon, carbonnitrogen, carbon-sulfur, and carbon-halogen bonds. Additionally, the article discusses the future directions for research in this field. [ABSTRACT FROM AUTHOR]

Poly succinimide (PSI) was synthesized from L-poly aspartic acid by thermal polycondensation reactio n・ The crosslinking agent acryloxyethylamine poly succinimide (AEA-PSI) was obtained by the reaction of PSI with ethanol and acrylylation PSI reacted with ethanol・ The P (NIPAm-co-AA) hydrogel was synthesized w 让h N-isopropylacrylamide(NIPAm) and acrylic acid (A A) as monomers and AEA-PSI as crosslinkers・ The drug sustained release and biodegradation properties of P(NIPAm-cAA) hydrogel were studied・ The results showed that when the NIPAm/AA molar ratio of P (NIPAm-co-AA) hydrogel was 92/8, the dosage of AEA-PSI was 4%, and the temperature was 37 °C, the sustained release effect of P(NIPAm-co-AA) hydrogel was the best, and the sustained release rate reached 60% w让hin 24 h・ The addition of pepsin had no significant effect on the sustained release rate of the drug・ The degradation rate of P(NIPAm-co-AA) hydrogel in simulated gastric fluid was higher than that in simulated intestinal fluid, and the degradation rate of P(NIPAm-co-AA) hydrogel in simulated gastric fluid reached more than 15% w:ithin 24 h・ [ABSTRACT FROM AUTHOR]

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