Filters








134,631 Hits in 3.9 sec

Nanoporous Metals for Advanced Energy Technologies Yi Ding and Zhonghua Zhang

2017 MRS bulletin  
Nanoporous Metals for Advanced Energy Technologies Yi Ding and Zhonghua Zhang Springer, 2016 223 pages, $129.00 (e-book $99.00) ISBN 978-3-319-29747-7 R ocket Girls is based on Holt's interviews of the  ... 
doi:10.1557/mrs.2017.109 fatcat:bfqvxn3usfcflmtxqtmyrg7wzq

Increased circulating β2-adrenergic receptor autoantibodies are associated with smoking-related emphysema

Jia-yi Hu, Bei-bei Liu, Yi-peng Du, Yuan Zhang, Yi-wei Zhang, You-yi Zhang, Ming Xu, Bei He
2017 Scientific Reports  
doi:10.1038/srep43962 pmid:28262783 pmcid:PMC5338268 fatcat:4myuznd7vbgubjp73wf5qhzxfm

Design of a Non-vacuum-cooling Compact Scientific CCD Camera [article]

Yi Feng, Hong-fei Zhang, Yi-ling Xu, Jin-ting Chen, Dong-xu Yang, Yi Zhang, Cheng Chen, Guang-yu Zhang, Jian-min Wang, Jian Wang
2018 arXiv   pre-print
Design of a Non-vacuum-cooling Compact Scientific CCD Camera Yi Feng, Hong-fei Zhang, Yi-ling Xu, Jin-ting Chen, Dong-xu Yang, Yi Zhang, Cheng Chen, Guang- yu Zhang, Jian-min Wang, Jian Wang, Senior  ...  SYSTEM TEST Figure 4 NVCC 4 CCD camera installed on the telescope Figure 5 5 Image taken from guiding system The Authors Yi Feng, Hong-fei Zhang, Yi-ling Xu, Jin-ting Chen, Dong-xu Yang, Yi Zhang  ... 
arXiv:1805.12209v1 fatcat:bmlvnxobcjcx5mcgt7ifhk3ske

Environmental tests of the HXI spectrometer for the ASO-S mission [article]

Deng-yi Chen, Yi-ming Hu, Zhe Zhang, Yan Zhang, Yong-qiang Zhang, Jian-hua Guo, Yong-yi Huang, Tao Ma, Jin Chang
2020 arXiv   pre-print
Chunsheng Zhang and Dr. Gordon for their useful advice. The author would also appreciate the HXI team who make this work wonderful.  ... 
arXiv:2005.07483v1 fatcat:amecvxu2cre6zmsbcljx5b5oxq

T Cell Dysfunction and Exhaustion in Cancer

Zhen Zhang, Shasha Liu, Bin Zhang, Liang Qiao, Yi Zhang, Yi Zhang
2020 Frontiers in Cell and Developmental Biology  
Collectively, TAMs are a highly active subset of immunosuppressive cells promoting tumor survival and immune evasion (Jiang et al., 2015; Yang and Zhang, 2017) .  ...  colleagues demonstrated that TAMs-secreted IL-10 promotes cancer stem cell-like properties and tumor growth in NSCLC; High levels of IL-10 are associated with a poor prognosis of NSCLC patients (Yang and Zhang  ... 
doi:10.3389/fcell.2020.00017 pmid:32117960 pmcid:PMC7027373 fatcat:iz52h6lnivgy3gxsqpvt6c5flq

The effects of energy intake of four different feeding patterns in rats

Huan Gong, Yi-wen Han, Liang Sun, Yan Zhang, En-yi Zhang, Yi Li, Tie-mei Zhang
2015 Experimental biology and medicine  
Energy intake can affect the metabolism. But it is not very clear that how and to what degree the metabolism can be changed by energy intake quantity and change. Here we applied four feeding patterns in male Sprague-Dawley rats-normal ad libitum diet (NFal), high-fat diet (HFal), caloric restriction (CR) after HFal (HFal-NFcr), and refeeding from CR to ad libitum (HFal-NFcr-NFal). Food intake and body weight, along with fat mass, insulin sensitivity, fasting plasma insulin, and glucose level
more » ... e used to calculate the energy efficiency and compared the quantitative effects of energy intake. Energy intake changed little in NFal or HFal group; while it changed greatly and suddenly in HFal-NFcr or HFal-NFcr-NFal group. All the parameters we detected were different between these four feeding patterns. Excess of energy intake from high-fat diet induced adverse outcomes with low energy efficiency. CR reversed the impairment of high-fat diet with very high energy efficiency in a short period. However, dramatic response with high energy efficiency induced by recovery to feeding ad libitum after CR, which was possible harmful to health. In conclusion, energy intake quantity and change are key determinants of metabolism. Different energy intake quantity and change affect body weight, white adipose tissue weight, insulin sensitivity, etc. at different degrees and speeds because of different energy efficiency.
doi:10.1177/1535370215584890 pmid:25966980 pmcid:PMC4935427 fatcat:jmueissapbfdjmnn6oicwsi7f4

DNA-based methods for identification of seafood species

Li ZHANG, Liang ZHANG, Shu-Cheng LIU, Yi-Jun ZHANG, Yi HAN
2010 Hereditas (Beijing)  
With the development of molecular biotechnology, methods for identification of seafood species are developed from protein to DNA. At present, the main DNA-based methods for species identification are FINS, PCR-RFLP, and specific-PCR, which have been used to identify the species of fresh, frozen, and pickled or canned seafood. However, qualitative and quantitative methods for identification of the mixed seafood species remain to be resolved. The gene databases play an important role in
more » ... g species and are valuable information resources for identification of seafood species. In this paper, recent progresses of major DNA-based methods for identification of seafood species are reviewed and the perspectives of this field are discussed.
doi:10.3724/sp.j.1005.2010.00555 pmid:20566458 fatcat:iogqqjw3orehpkuowzh7njmwiy

High energy density Li-ion capacitor assembled with all graphene-based electrodes

Tengfei Zhang, Fan Zhang, Long Zhang, Yanhong Lu, Yi Zhang, Xi Yang, Yanfeng Ma, Yi Huang
2015 Carbon  
A B S T R A C T To meet the higher requirement of energy storage units, novel devices combining high power performance of supercapacitor and high energy density of Li-ion battery are in urgent demand. Herein we designed and fabricated a Li-ion capacitor device, which is composed of an electrochemical double layer capacitance electrode as the positive electrode and a Li-ion battery type electrode as the negative electrode. Both electrodes consist of graphene-based active materials: a
more » ... ional graphene-based porous carbon material with ultrahigh specific surface area, appropriate pore size distribution and excellent conductivity for the positive electrode, and a flash-reduced graphene oxide with open-pore structure and superior rate capability for the negative electrode. With the benefit of the Liion capacitor structure, the device exhibits a comprehensive and excellent electrochemical performance in terms of high operating voltage (4.2 V), ultrahigh energy density of 148.3 Wh kg À1 (with power density of 141 W kg À1 ), maximum power density of 7800 W kg À1 (with energy density kept at 71.5 Wh kg À1 ) and long cycle life. Such a superior performance indicates that the Li-ion capacitor could be a promising novel energy storage device for wide applications in fast, high efficient and long life energy storage systems.
doi:10.1016/j.carbon.2015.03.032 fatcat:be6aejd75zg37cfjhfb6xgnh6m

Decomposition Theory [article]

Yi Zhang
2012 arXiv   pre-print
We give a characterization of decomposition theory in linear algebra.
arXiv:1212.2912v1 fatcat:iehy2sgnq5curajc5v3ktis23a

Obesity: Pathophysiology and Intervention

Yi Zhang, Ju Liu, Jianliang Yao, Gang Ji, Long Qian, Jing Wang, Guansheng Zhang, Jie Tian, Yongzhan Nie, Yi Zhang, Mark Gold, Yijun Liu
2014 Nutrients  
Obesity presents a major health hazard of the 21st century. It promotes co-morbid diseases such as heart disease, type 2 diabetes, obstructive sleep apnea, certain types of cancer, and osteoarthritis. Excessive energy intake, physical inactivity, and genetic susceptibility are main causal factors for obesity, while gene mutations, endocrine disorders, medication, or psychiatric illnesses may be underlying causes in some cases. The development and maintenance of obesity may involve central
more » ... hysiological mechanisms such as impaired brain circuit regulation and neuroendocrine hormone dysfunction. Dieting and physical exercise offer the mainstays of obesity treatment, and anti-obesity drugs may be taken in conjunction to reduce appetite or fat absorption. Bariatric surgeries may be performed in overtly obese patients to lessen stomach volume and nutrient absorption, and OPEN ACCESS Nutrients 2014, 6 5154 induce faster satiety. This review provides a summary of literature on the pathophysiological studies of obesity and discusses relevant therapeutic strategies for managing obesity. Approximately 15%-20% of all cancer deaths in US are linked to overweight and obesity [11] . Adams et al. [12] investigated the risk of death in a prospective cohort of more than 500,000 US males and females with a 10 year follow-up. Among patients who had never smoked, the risk of death was found to increase by 20%-40% in the overweight and by two-to three-fold in the obese compared with the normal weight subjects [12] . Among numerous factors influencing obesity, overconsumption of caloric dense foods is one major culprit. Currently, in developed countries and developing countries alike, the food industry is rather successful in the mass production and marketing of calorie-dense foods [13] . Such foods are made readily available in grocery stores, shops, schools, restaurants, and homes [14] . There was a 42% per capita increase in the consumption of added fats and a 162% increase for cheese in the United States from 1970 to 2000. In contrast, consumption of fruits and vegetables only increased by 20% [15] . High-calorie foods present motivational and reward cues that likely trigger overconsumption [16] . Brain imaging studies demonstrate hyperactivation in the gustatory cortex (insula/frontal operculum) and oral somatosensory regions (parietal and rolandic operculum) in the obese relative to normal weight subjects in response to anticipated intake and consumption of palatable foods, and hypoactivation in the dorsal striatum and reduced striatal D2 dopamine receptor density in response to consumption of palatable foods [17] . These findings [17] indicated a relationship between abnormalities in food reward and an increased risk for future weight gain, suggesting greater weight gain for participants in an unhealthy food environment [4]. Binge Eating and Food Addiction Binge Eating Disordered eating and unhealthy weight control practices are widespread among adolescents, which may place them at risk for an eating disorder. Eating disorders are associated with a chronic course, high recidivism rates, and numerous medical and psychological comorbidities. Therefore, the need for early identification and prevention of eating disorders becomes an important issue that requires more attention from primary care services [18, 19] . Binge-eating disorder (BED) is the most common eating disorder in adults. The disorder affects an individual's emotional and physical health and is an important public health problem [20, 21] . About 2.0% of men and 3.5% of women bear this illness lifelong-statistics higher than for the commonly recognized eating disorders anorexia nervosa and bulimia nervosa [20] . BED is characterized by binge eating without subsequent purging episodes and an association with the development of severe
doi:10.3390/nu6115153 pmid:25412152 pmcid:PMC4245585 fatcat:4fiw2mvsvfhstnzh5sxnkb4da4

Deep Reinforcement Learning of Transition States [article]

Jun Zhang, Yao-Kun Lei, Zhen Zhang, Xu Han, Maodong Li, Lijiang Yang, Yi Isaac Yang, Yi Qin Gao
2020 arXiv   pre-print
Combining reinforcement learning (RL) and molecular dynamics (MD) simulations, we propose a machine-learning approach (RL^) to automatically unravel chemical reaction mechanisms. In RL^, locating the transition state of a chemical reaction is formulated as a game, where a virtual player is trained to shoot simulation trajectories connecting the reactant and product. The player utilizes two functions, one for value estimation and the other for policy making, to iteratively improve the chance of
more » ... inning this game. We can directly interpret the reaction mechanism according to the value function. Meanwhile, the policy function enables efficient sampling of the transition paths, which can be further used to analyze the reaction dynamics and kinetics. Through multiple experiments, we show that RL can be trained tabula rasa hence allows us to reveal chemical reaction mechanisms with minimal subjective biases.
arXiv:2011.06700v1 fatcat:r4ybbyshube73kchrw2c474lz4

Chimonocalamus Hsueh et T. P. Yi [chapter]

Jun Yi Shi, Bing Yin Che, Yu Xiao Zhang, De Qun Zhou, Li Sha Ma, Jun Yao, Xian Zhi Zhang
2022 Illustrated Flora of Bambusoideae in China  
Yi Chimonocalamus Hsueh et T. P. Yi Chimonocalamus Hsueh et T. P. Yi Chimonocalamus Hsueh et T. P. Yi Chimonocalamus Hsueh et T. P. Yi Chimonocalamus Hsueh et T. P. Yi  ...  Yi et L. S.  ...  Yi in Flora of China (Li et al. 2006) and World Checklist of Bamboos and Rattans (Vorontsova et al. 2016 ).  ... 
doi:10.1007/978-981-16-2758-3_29 fatcat:nohcikh2abdizf2f22ja6uvkka

Cultural evolution and personalization [article]

Ning Xi, Zi-Ke Zhang, Yi-Cheng Zhang
2012 arXiv   pre-print
In social sciences, there is currently no consensus on the mechanism for cultural evolution. The evolution of first names of newborn babies offers a remarkable example for the researches in the field. Here we perform statistical analyses on over 100 years of data in the United States. We focus in particular on how the frequency-rank distribution and inequality of baby names change over time. We propose a stochastic model where name choice is determined by personalized preference and social
more » ... ence. Remarkably, variations on the strength of personalized preference can account satisfactorily for the observed empirical features. Therefore, we claim that personalization drives cultural evolution, at least in the example of baby names.
arXiv:1212.0217v1 fatcat:fjuzfnnl3fdw3oojtvsmzyzpfq

Carney complex with PRKAR1A gene mutation

Qiuli Liu, Dali Tong, Gaolei Liu, Yuting Yi, Dianzheng Zhang, Jun Zhang, Yao Zhang, Zaoming Huang, Yaoming Li, Rongrong Chen, Yanfang Guan, Xin Yi (+1 others)
2017 Medicine  
Rationale: Carney complex (CNC) is a multiple neoplasia syndrome with autosomal dominant inheritance. CNC is characterized by the presence of myxomas, spotty skin pigmentation, and endocrine overactivity. No direct correlation has been established between disease-causing mutations and phenotype. Patient concerns: A 16-year-old boy was admitted because of excessive weight gain over 3 years and purple striae for 1 year. Physical examination revealed Cushingoid features and spotty skin
more » ... on his face, lip, and sclera. Diagnoses: The patient was diagnosed as Carney complex. Interventions: the patient underwent right adrenalectomy and partial adrenalectomy of the left adrenal gland. Outcome: Results of imaging showed bilateral adrenal nodular hyperplasia, multiple microcalcifications of the bilateral testes, and compression fracture of the thoracolumbar spine. Histopathological results confirmed multiple pigmented nodules in the adrenal glands. DNA sequencing revealed a nonsense mutation in the gene encoding regulatory subunit type 1-alpha of protein kinase A (PRKAR1A; c.205C > T). After the second adrenalectomy, the Cushingoid features disappeared, and cortisol levels returned to normal. Lessons: Carney complex is a rare disease that lacks consistent genotype-phenotype correlations. Our patient, who carried a germline PRKAR1A nonsense mutation (c.205C > T), clinical features included spotty skin pigmentation, osteoporosis, and primary pigmented nodular adrenal disease. Adrenalectomy is the preferred treatment for Cushing syndrome due to primary pigmented nodular adrenal disease. Abbreviations: ACTH = adrenocorticotropic hormone, CNC = Carney complex, IRB = institutional review board, LCCST = large-cell calcifying Sertoli cell tumor, PKA = protein kinase A, PPNAD = primary pigmented nodular adrenal disease, RIa = 1-a regulatory subunit.
doi:10.1097/md.0000000000008999 pmid:29390296 pmcid:PMC5815708 fatcat:c5374zzqzvh6diglgcviwwqdie

A single-center retrospective study of pediatric hepatoblastoma

Yi Zhang, Weiling Zhang, Suoqin Tang, Liping Chen, You Yi, Pinwei Zhang, Aiping Liu, Tian Zhi, Dongsheng Huang
2016 Oncology Letters  
Hepatoblastoma is a malignant liver tumor generally diagnosed in infants and children <3 years old. The current retrospective study aimed to investigate the associations of tumor stage, pathological type, metastasis and chemotherapy with clinical outcomes. In the current study, a total of 102 patients with hepatoblastoma were enrolled between September 2006 and June 2014. Clinical records and follow-up information for each of patient were obtained to conduct a Kaplan-Meier survival analysis and
more » ... log-rank test. The median age of the subjects was 1.5 years, and 98 patients had stage III or IV hepatoblastoma. Complete or partial remittance occurred in 72 subjects, and 91 underwent surgical operation. The survival rate differed significantly among patients with different tumor stages (P=0.015, χ2=8.359). The mortality rate of stage IV subjects with intrahepatic metastasis was significantly higher than that of those without (P=0.004). Among the 45 subjects with relapsed hepatoblastoma, the mortality rate was higher in the subjects that abandoned chemotherapy than in patients who continued regular chemotherapy. In total, 27 of 45 subjects with relapsed hepatoblastoma succumbed to the disease; 20 of them abandoned chemotherapy treatment; and the remaining 7 patients underwent regular chemotherapy and succumbed to the disease by the end of follow-up. The present study indicates that the increased mortality rate was associated with postoperative residual-induced intrahepatic metastasis and relapsed hepatoblastoma; and that regular chemotherapy is necessary for patient to achieve complete or partial remission following surgical operation.
doi:10.3892/ol.2016.5195 pmid:27895749 pmcid:PMC5104209 fatcat:v7foogalkrc33o54blsfmqtrei
« Previous Showing results 1 — 15 out of 134,631 results