检索结果-南通市图书馆

Parameterization and Explicit Modeling of Cloud Microphysics:Approaches, Challenges, and Future Directions

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Atmospheric Sciences 2023年第5期40卷 747-790页

作者： Yangang LIU man-kong YAU Shin-ichiro SHIMA Chunsong LU Sisi CHEN Environmental and Climate Sciences Department Brookhaven National LaboratoryUptonNY11973USA Department of Atmospheric Sciences McGill UniversityMontrealH3A 0B8Canada Graduated School of Information Science University of HyogoKobe 650-0047Japan College of Atmospheric Physics Nanjing University of Information Science and TechnologyNanjing 210044China National Center for Atmospheric Research BoulderCO80307USA

Cloud microphysical processes occur at the smallest end of scales among cloud-related processes and thus must be parameterized not only in large-scale global circulation models(GCMs)but also in various higher-resolution limited-area models such as cloud-resolving models(CRMs)and large-eddy simulation(LES)*** of giving a comprehensive review of existing microphysical parameterizations that have been developed over the years,this study concentrates purposely on several topics that we believe are understudied but hold great potential for further advancing bulk microphysics parameterizations:multi-moment bulk microphysics parameterizations and the role of the spectral shape of hydrometeor size distributions;discrete vs“continuous”representation of hydrometeor types;turbulence-microphysics interactions including turbulent entrainment-mixing processes and stochastic condensation;theoretical foundations for the mathematical expressions used to describe hydrometeor size distributions and hydrometeor morphology;and approaches for developing bulk microphysics *** presented are the spectral bin scheme and particle-based scheme(especially,super-droplet method)for representing explicit *** advantages and disadvantages are elucidated for constructing cloud models with detailed microphysics that are essential to developing processes understanding and bulk microphysics ***-resolved direct numerical simulation(DNS)models are described as an emerging technique to investigate turbulence-microphysics interactions at the most fundamental level by tracking individual particles and resolving the smallest turbulent eddies in turbulent *** challenges and future research directions are explored as well.

关键词： cloud microphysics parameterizations systems theory bin microphysics particle-based microphysics particleresolved direct numerical simulations

Creatine Pyruvate Enhances Lipolysis and Protein Synthesis in Broiler Chicken

在线全文

学校读者我要写书评

暂无评论

Agricultural Sciences in China 2011年第12期10卷 1977-1985页

作者： CHEN Juan MA Hai-tian WANG man kong Yi-li ZOU Si-xiang Key Laboratory of Animal Physiology ＆ Biochemistry College of Veterinary Medicine Nanjing Agricultural University Nanjing 210095 P.R. China

To assess the effects ofcreatine pyruvate （Cr-Pyr） on lipid and protein metabolism in broiler chickens, a total of 400 1-day-old male birds （Aconred） were randomly allocated to four groups, with each group replicating four times and each replicate involving 25 birds. The broilers were provided with a commercial diet supplemented with Cr-Pyr at 0, 1, 5, or 10% of the diet, respectively, for a period of 3 wk ad libitum （from 22 to 42 d）. In the present study, body weight （BW） and average daily gain （ADG） of broilers decreased in 10% Cr-Pyr group （P〈0.01）, whereas the relative leg and pectoral muscle weights were significantly higher than they were in the control group （P〈0.05）. 5 or 10% Cr-Pyr of diets decreased the abdominal fat rate （AFR, abdominal fat/live weight） of the broilers. The serum or hepatic triglyceride （TG） concentrations were significantly lower in the 5 and 10% groups （P〈0.01）. In contrast, Cr-Pyr caused a marked increase in the serum nonesterified fatty acid （NEFA）, high-density lipoprotein cholesterol （HDL-C） and creatine kinase （CK） concentrations （P〈0.01）. Supplementation with Cr-Pyr （5 and 10%） in the diet also increased glucagons （GLU）, insulin （INS） or leptin （LEP） contents （P〈0.01）. The expression of hepatic peroxisomal proliferators-activated receptor α （PPAR-α） and carnitine palmitoyl transferase-I （CPT-I）, muscle insulin-like growth factor I （IGF-I） were significantly elevated and myostatin mRNA level was reduced in the 5 and 10% groups （P〈0.05）. It was found that supplementation with 5% Cr-Pyr improves both lipid and protein metabolism by regulating various metabolic parameters of broilers, while not adversely affects growth performance in broiler chickens.

关键词： creatine pyruvate (Cr-Pyr) lipid metabolism protein metabolism liver muscle broiler chickens

Transcriptome profiling reveals the roles of pigment mechanisms in postharvest broccoli yellowing

在线全文

学校读者我要写书评

暂无评论

Horticulture Research 2019年第1期6卷 846-859页

作者： Feng Luo Jia-Hui Cai Xi-man kong Qian Zhou Xin Zhou Ying-Bo Zhao Shu-Juan Ji Department of Food Science Shenyang Agricultural University110866 ShenyangPR Chin

Postharvest broccoli is prone to yellowing during storage,which is the key factor leading to a reduction in *** explore appropriate control methods,it is important to understand the mechanisms of *** analyzed the genes related to the metabolism of chlorophyll,carotenoids,and flavonoids and the transcription factors(TFs)involved in broccoli yellowing using transcriptome sequencing *** stored at 10℃showed slight yellowing on postharvest day 5 and serious symptoms on day *** were significant changes in chlorophyll fluorescence kinetics,mainly manifesting as a decrease in the Fv/Fm value and an increase in nonphotochemical quenching,during the yellowing *** sequencing profiles from samples of fresh broccoli and broccoli with slight and severe yellowing revealed 6,5,and 4 differentially expressed genes involved in chlorophyll metabolism,carotenoid biosynthesis,and flavonoid biosynthesis,*** transcription factor gene ontology categories showed that the MYB,bHLH,and bZip gene families were involved in chlorophyll *** addition,the transcription factor families included NACs and ethylene response factors(ERFs)that regulated carotenoid *** transcription polymerase chain reaction further confirmed that bHLH66,PIF4,LOB13,NAC92,and APL were vital transcription factors that potentially regulated the CAO and HYD genes and were involved in chlorophyll metabolism and the carotenoid biosynthetic *** flavonoid biosynthetic pathway was mainly regulated by MYBs,NACs,WRKYs,MADSs,and *** results of the differentially expressed gene(DEG)and pigment content analyses indicated that the transcriptome data were accurately and positively associated with broccoli yellowing.

关键词： Fv/Fm process fir

Probiotic Bio-Three induces Th1 and anti-inflammatory effects in PBMC and dendritic cells

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2010年第28期16卷 3529-3540页

作者： man-Chin Hua Tzou-Yien Lin Chien-Chang Chen Ming-Wei Lai man-Shan kong Hung-Ju Chang Department of Pediatrics Chang Gung Memorial Hospital Keelung 204 Taiwan China Graduate Institute of Clinical Medical Sciences College of Medicine Chang Gung University Taoyuan 333 Division of Infectious Disease Division of Gastroenterology Department of Pediatrics Chang Gung Memorial HospitalTaoyuan 333TaiwanChina

AIM:To investigate the immune response of peripheral blood mononuclear cells(PBMCs)and dendritic cells (DCs)that were stimulated by probiotic preparations. METHODS:PBMCs were isolated,cultured,and stimulated with Bio-Three(a mixture of Bacillus mesentericus, Clostridium butyricum and Enterococcus faecalis;105, 10 6 and 10 7 CFU/mL for 24 h).Cytokine production of (1)circulating PBMCs;(2)PBMCs stimulated by probiotic preparation;(3)monocyte-derived DCs;and(4)DC andT cell co-culture was determined by enzyme-linked immunosorbent *** analysis of circulating PBMCs was also investigated by flow *** was obtained from individuals who consumed Bio-Three (10 9 CFU/d ***,*** and ***) for 2 wk,or those who did not take probiotics orally. RESULTS:In culture supernatants,interferon-γ(IFN-γ) and interleukin(IL)-10 production increased,but IL-4 and tumor necrosis factor-α(TNF-α)production by PBMCs decreased after 1 and 2 wk of probiotic *** cytometry was also performed on day 14 and detected enhanced expression of CD11b,HLA-DR, CD4,CD45RA,CD25,CD44 and CD69 in response to ***,IL-10 and IL-12 were upregulated in supernatants of monocyte-derived DCs,and IFN-γand IL-10 were enhanced in supernatants of CD4 + T cells co-cultured with DCs. CONCLUSION:Bio-Three appeared to stimulate the Th1 immune response,downregulate pro-inflammatory cytokines(TNF-α)and upregulate anti-inflammatory cytokine(IL-10).Probiotics could be effective in activation of PBMCs and DCs.

关键词： Probiotics Bio-Three Peripheral blood mono- nuclear cells Dendritic cells

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

某型航空发动机仿真控制器调节计划实现

辽宁工程技术大学学报（自然科学版） 2005年第z2期24卷 117-119页

作者：傅强孔满昭中国民用航空飞行学院飞行技术学院四川广汉618307 西北工业大学动力与能源学院陕西西安710072

为了解决某型航空发动机的调节计划问题,介绍了某型发动机数字控制器的各种调节计划,论述了系统中数字控制器的调节计划并进行了仿真。该仿真系统既是为发动机电子控制器提供一个仿真的环境,也可以作为控制器算法的验证平台,即用一个控... 详细信息

为了解决某型航空发动机的调节计划问题,介绍了某型发动机数字控制器的各种调节计划,论述了系统中数字控制器的调节计划并进行了仿真。该仿真系统既是为发动机电子控制器提供一个仿真的环境,也可以作为控制器算法的验证平台,即用一个控制算法与该仿真平台相连,使整个系统可以工作,并使平台能够实现数据的通信与转换,计算结果可用来评定该控制算法的性能。系统采用与真实电子控制器相同的控制算法来模拟电子控制器。

关键词：航空发动机实时数字电子仿真多变量系统 PID控制器

A paradigm shift in the management of Central Serous Chorioretinopathy (CSC) (include a 1-year RCT study on CSC)

在线全文

学校读者我要写书评

暂无评论

A paradigm shift in the management of Central Serous Chorior...

Polypodial choroidal vasculopathy in Chinese:Is it an AMD variant?

中华医学会第十二届全国眼科学术大会

作者： Wai man Chan Hong kong Sanatorium & Hospital

A paradigm shift in the management of Central Serous Chorioretinopathy Central serous chorioretinopathy (CSC) is a well—char- acterized disorder leading to serous detachment of neurosenso-

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Polypodial choroidal vasculopathy in Chinese:Is it an AMD va...

A New Oligostilbene from the Roots of Vitis Amurensis

中华医学会第十二届全国眼科学术大会

作者： Wai man Chan Hong kong Sanatorium & Hospital

Polypodial choroidal Vasculopathy in Chinese:Is it an AMD variant? There are several differences between the phenotypes of

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Chinese Chemical Letters 1999年第9期10卷 775-776页

作者： Kai Sheng HUANG Mao LIN Lin Nine YU man kong(Institute of Materia Mad ica. Chinese Academy of Medical Sciencesand Peking Union Medical College. Beijing 10000) Chinese Acad Med Sci Inst Materia Medica Beijing 100050 Peoples R China Peking Union Med Coll Beijing 100050 Peoples R China

A new resveratrol trimer. amurensin G (1), was isolated from the roots of Vitis amurensis Rupr. Its structure and relative configuration were established on the basis of spectral evidence. especially on HMBC spectrum ... 详细信息

关键词： Vitis amurensis Vitaceae oligostilbene amurensin G resveratrol

美国私立学校资助政策中的权力博弈关系研究——基于资源依赖理论的分析

在线全文

学校读者我要写书评

暂无评论

教育理论与实践 2019年第4期39卷 20-25页

作者：孔曼华东师范大学教育学部上海200062

私立学校与政府之间不对称的资源依赖关系带来政府对私立学校外部权力的扩张,以及政府的监管权与私立学校的办学自主权之间的博弈。美国政府与私立学校的权力博弈关系在有无政府资助两种条件下呈现完全不同的样态,私立学校通过采取反应... 详细信息

私立学校与政府之间不对称的资源依赖关系带来政府对私立学校外部权力的扩张,以及政府的监管权与私立学校的办学自主权之间的博弈。美国政府与私立学校的权力博弈关系在有无政府资助两种条件下呈现完全不同的样态,私立学校通过采取反应型和创造型相结合的策略有效改善了办学自主权弱势的现象。借鉴美国的经验,当前,我国治理政府与非营利性民办学校的权力冲突问题可采取以下策略:明确政府参与管理私立学校的重要意义;民办学校应减少对政府资金单一依赖并开拓新的资金来源;坚持特色办学,通过提高教育质量和服务水平增加自身资源的重要性和竞争优势。

关键词：美国私立学校资助政策权力博弈资源依赖理论