检索结果-南通市图书馆

Effects of Fermentation Product Containing Phytase on Productive Performance,Egg Quality,and Phosphorous Apparent Metabolism of Laying Hens Fed Different Levels of Phosphorus

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

Journal of Integrative Agriculture 2014年第10期13卷 2253-2259页

作者： wang zhi-hong DONG Xiao-fang TONG Jian-ming XU Shang-zhong Institute of Animal Sciences Chinese Academy of Agricultural Sciences

This study investigated the effects of fermentation product containing phytase （FPP） that was fermented using waste vinegar residue （WVR） as substrate from Aspergillusficuum NTG-23 on productive performance, egg quality, and phosphorus apparent metabolism of laying hens. First, 375 22-wk-old Jinghong hens were allocated into 5 treatments （5 replicates of 15 hens each） in an 8-wk experiment for evaluating the parameters of productive performance, egg quality, serum, and tibia. Experimental diets contained 4% FPP and 96% corn-soybean diet. The levels of dicalciurn phosphate （DCP） were 1.34, 1.01, 0.67, 0.34 and 0%. Next, thirty 31-wk-old Jinghong hens were fed 5 types of diets for evaluating phosphorous apparent metabolism rate. Egg productive rate, egg weight, feed conversion ratio, Haugh unit, egg albumen height, serum calcium, tibia ash, tibia ash calcium and tibia breaking strength were not different significantly among 5 treatments. The significant difference of average daily feed intake was not appeared when the DCP content of corn-soybean-FPP diet was reduced to 0.67%; the eggshell hardness, eggshell thickness and serum phosphorus were not reduced significantly until the DCP content of corn-soybean-FPP diet was reduced to 0.34%. The yolk color was improved when the laying hens fed deficient DCP corn-soybean-FPP diet. A 22.14% reduction in excreta phosphorus was observed when the laying hens fed low phosphorus （0.67% DCP） corn-soybean-FPP diet. A 30% elevation of phosphorus apparent metabolism rate was obtained when the DCP content of corn-soybean-FPP diet was decreased from 1.34 to 1.01%. The reducing cost of layer diet was totalized about 120 CNY 1000 kg1 diet when the content of DCP was 0.67% in corn-soybean-FPP diet. These results indicated that FPP could be applied in laying hen as a potential, cost-effective and rational application of WVR.

关键词： fermentation product containing phytase productive performance egg quality phosphorous apparent metabolism,laying hen

Association between Chinese Famine Exposure and the Risk of Overweight/Obesity and Abdominal Obesity in Laterlife:A Cross-sectional Study

在线全文

学校读者我要写书评

暂无评论

Biomedical and Environmental Sciences 2020年第2期33卷 133-137页

作者： HUANG Li Na wang Hui Jun wang zhi hong DING Gang Qiang National Institute for Nutrition and Health Chinese Center for Disease Control and PreventionBeijing 100050China

This study aimed to examine the association between famine exposure in different stages of life and the risk of overweight/obesity and abdominal obesity in laterlife.A total of 12,458 participants were categorized int... 详细信息

关键词： Association Risk Laterlife

Virion Proteomics of Large DNA Viruses

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

Virologica Sinica 2009年第4期24卷 268-284页

作者： Ran-ran wang zhi-hong HU Hua-lin wang Fei DENG State Key Laboratory of Virology Wuhan Institute of Virology Chinese Academy of Sciences Wuhan 430071China

Large DNA viruses normally have complex structures with many of protein components derived from both viral and host origins. The development in proteomics, especially mass spectrometry identification techniques provide powerful tools for analyzing large viruses. In this review, we have summarized the recent achievements on proteomic studies of large DNA viruses, such as herpesvirus, poxvirus, nimavirus and baculoviruse. The proteomics of baculovirus occlusion-derived virions (ODV) were emphasized. Different mass spectrometry techniques used on various baculoviruses were introduced, and the identified structurally associated proteins of baculoviruses are summarized.

关键词： Virion proteomics Large DNA viruses Baculoviruses

Numerical Prediction of Hydrodynamic Forces on A Ship Passing Through A Lock

在线全文

学校读者我要写书评

暂无评论

China Ocean Engineering 2014年第3期28卷 421-432页

作者：王宏志邹早建 School of Naval Architecture Ocean & Civil Engineering Shanghai Jiao Tong University State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University

While passing through a lock, a ship usually undergoes a steady forward motion at low speed. Owing to the size restriction of lock chamber, the shallow water and bank effects on the hydrodynamic forces acting on the ship may be remarkable, which may have an adverse effect on navigation safety. However, the complicated hydrodynamics is not yet fully understood. This paper focuses on the hydrodynamic forces acting on a ship passing through a lock. The unsteady viscous flow and hydrodynamic forces are calculated by applying an unsteady RANS code with a RNG k-e turbulence model. User-defined function （UDF） is compiled to define the ship motion. Meanwhile, the grid regeneration is dealt with by using the dynamic mesh method and sliding interface technique. Numerical study is carried out for a bulk carrier ship passing through the Pierre Vandamme Lock in Zeebrugge at the model scale. The proposed method is validated by comparing the numerical results with the data of captive model tests. By analyzing the numerical results obtained at different speeds, water depths and eccentricities, the influences of speed, water depth and eccentricity on the hydrodynamic forces are illustrated. The numerical method proposed in this paper can qualitatively predict the ship-lock hydrodynamic interaction. It can provide certain guidance on the manoeuvring and control of ships passing through a lock.

关键词： ship-lock hydrodynamic interaction numerical simulation dynamic mesh sliding interface

Numerical prediction of hydrodynamic forces on a ship passing through a lock with different configurations

在线全文

学校读者我要写书评

暂无评论

Journal of Hydrodynamics 2014年第1期26卷 1-9页

作者：王宏志邹早建 School of Naval Architecture Ocean and Civil Engineering and State Key Laboratory of Ocean EngineeringShanghai Jiao Tong University

A CFD method is used to numerically predict the hydrodynamic forces and moments acting on a ship passing through a lock with a constant speed. By solving the RANS equations in combination with the RNG k-e turbulence model, the unsteady viscous flow around the ship is simulated and the hydrodynamic forces and moments acting on the ship are calculated. UDF is com-piled to define the ship motion. Meanwhile, grid regeneration is dealt with by using the dynamic mesh method and sliding interface technique. Under the assumption of low ship speed, the effects of free surface elevation are neglected in the numerical simulation. A bulk carrier ship model is taken as an example for the numerical study. The numerical results are presented and compared with the available experimental results. By analyzing the numerical results obtained for locks with different configurations, the influences of approach wall configuration, lock configuration symmetry and lock chamber breadth on the hydrodynamic forces and moments are demonstrated. The numerical method applied in this paper can qualitatively predict the ship-lock hydrodynamic interaction and pro-vide certain guidance on lock design.

关键词： ship-lock hydrodynamic interaction numerical prediction lock configuration lock design

Associations of Sedentary Time and Physical Activity with Metabolic Syndrome among Chinese Adults:Results from the China Health and Nutrition Survey

在线全文

学校读者我要写书评

暂无评论

Biomedical and Environmental Sciences 2021年第12期34卷 963-975页

作者： BAI Jing wang Yun ZHANG Xian Fan OUYANG Yi Fei ZHANG Bing wang zhi hong DU Shu Fa wang Hui Jun National Institute for Nutrition and Health Chinese Center for Disease Control and PreventionBeijing 100050China Department of Nutrition and Carolina Population Center University of North Carolina at Chapel Hill 123 W.Franklin St.Chapel Hill NC 27599USA

Objective This study aimed to determine the independent and joint associations of sedentary time(ST)and physical activity(PA) with metabolic syndrome(MetS) and its components among Chinese *** The study analyzed data from 4,865 adults aged ≥ 18 years who participated in the 2009 and2015 China Health and Nutrition Surveys(CHNS). Four types of leisure ST and three types of PA selfreported at baseline were collected. Multivariable logistic regressions were used to determine the independent and joint associations of ST and PA with the odds of MetS or its *** For independent effects, higher levels of television time and total leisure ST was associated with higher MetS risk [odds ratio(OR) 1.3, 95% confidence interval(CI) 1.1–1.6, P 7 hours/week(h/w) group was higher than that in the < 7 h/w group in(OR 1.5, 95% CI 1.2–1.9). Higher levels of moderate-to-vigorousintensity physical activity(MVPA) and total PA were associated with a lower MetS risk(OR 0.7, 95% CI0.6–0.9, P < 0.001;OR 0.8, 95% CI 0.7–0.9, P < 0.001, respectively). For the joint effects, compared with those reporting the lowest level of total leisure ST(< 14 h/w) and the most active tertile of MVPA(≥ 61.0 MET-h/w), participants reporting the most total leisure ST(≥ 35 h/w) and the lowest level of MVPA(0 MET-h/w) had the highest odds of MetS(OR 2.0;95% CI 1.4–2.7). Except for people reporting ST(14–21 h/w) within the most active tertile of MVPA, the associations in all other groups were *** the increase of TV time and decreased MVPA, the odds of MetS almost showed a curve *** MVPA and total PA have independent preventive effects, and sedentary behavior(mainly watching TV) has an unsafe effect on MetS and its components. Strengthening the participation of MVPA and combining the LPA to replace the TV-based ST to increase the total PA may be necessary to reduce t

关键词： Sedentary time Physical activity Metabolic syndrome Adults

Numerical Prediction of Hydrodynamic Forces on A Berthed Ship Induced by A Passing Ship in Different Waterway Geometries

在线全文

学校读者我要写书评

暂无评论

China Ocean Engineering 2016年第2期30卷 205-216页

作者：王宏志邹早建 School of Naval Architecture Ocean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration(CISSE) Shanghai 200240China

An investigation has been conducted to quantify the effect of waterway geometry on the form and magnitude of forces and moment experienced by a berthed ship due to a passing *** using the dynamic mesh technique and solving the unsteady RANS equations in conjunction with a RNG k？ε turbulence model,numerical simulation of the three-dimensional unsteady viscous flow around a passing ship and a berthed ship in different waterway geometries is conducted,and the hydrodynamic forces and moment acting on the berthed ship are *** proposed method is verified by comparing the numerical results with existing empirical curves and a selection of results from model scale *** calculated interaction forces and moment are presented for six different waterway *** magnitude of the peak values and the form of the forces and moment on the berthed ship for different cases are investigated to assess the effect of the waterway *** results of present study can provide certain guidance on safe maneuvering of a ship passing by a berthed ship.

关键词： passing ship-berthed ship hydrodynamic interaction numerical simulation waterway geometry

Polyacrylamide hydrogels with phenylboronic acid moieties for the imprinting of proteins

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2010年第12期21卷 1487-1489页

作者： Yan wang zhi Hua Chai hong Yan He Yi Zhe Jiang Guo Qi Fu Key Laboratory of Functional Polymer Materials of Ministry of Education Institute of Polymer Chemistry Nankai University Tianjin 300071 China

In this letter,N-acryloyl-3-aminophenylboronic acid（AAPBA） was synthesized and then examined as a new functional monomer for protein *** was allowed to be copolymerized with acrylamide to produce hemoglobin- or lysozyme-imprinted *** template rebinding tests,the imprinted gels showed significant increase in the specific binding with the increase of the AAPBA amounts in the prepolymerization *** results indicate that AAPBA may be a useful functional monomer for its moderate interactions with protein molecules.

关键词： Protein imprinting Hydrogels Hemoglobin Lysozyme 3-Aminophenylboronic acid

New precut sphincterotomy for endoscopic retrograde cholangiopancreatography in difficult biliary duct cannulation

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2007年第32期13卷 4385-4390页

作者： Deng-Hao Deng hong-Nei Zuo Jia-Feng wang zhi-E Gu hong Chen Yuan Luo Ming Chen Wen-Nuo Huang Lu wang Wei Lu Department of Gastroenterology Clinical Medical College of Yangzhou University No. 98 Nangtong West Road Yangzhou 225001 Jiangsu Province China

AIM： To retrospectively investigate the effect and safety of various new type precut sphincterotomy techniques （VNTPST） in endoscopic retrograde cholangiopancreatography （ERCP） due to difficult biliary duct cannulation （DBC）. METHODS： A plough-like pull-type sphincterotome （PLPTS） or improved short nose sphincterotome or improved needle knife was applied. VNTPST was carried out in 30 of 280 patients, whose biliary tract could not be exposed well or deep cannulation was difficult to perform during ERCP with traditional methods. Patients were followed up for short-term complications and the therapeutic effect of VNTPS was observed and compared with that of traditional endoscopic sphincterotomy （EST）. RESULTS： A total 280 patients underwent ERCP, of which 3 failed in operation because of pathological features in stomch or duodenum, 247 successfully underwent traditional ERCP （89.1%, 247/277）, 30 failed （10.8%, 30/277）. VNTPS technique succeeded in 24 （80%, 24/30） of 30 cases. The successful rate of deep biliary duct cannulation increased 8.6% （24/277）, the total cannulation successful rate following precut was 97.7%. There was a significant difference between the two groups （97.7% vs 89.1%, x^2= 17.1, P 〈 0.01）. The incidence of complications was 9.3% （26/277） for traditional ERCP group and 13.3% （4/30） for VNTPS technique group. Guideline tip was broken in pancreatic duct （KPDGP） of one patient, and there was no pancreatitis, slight or moderate bleeding postoperatively occurred in 2 patients, 1 patient had bleeding during operation （PDWN）. There were no differences between VNTPS technique group and traditional ERCP（TRERCP）group （13.3% vs 9.3%, %2 = 0.478, P 〉 0.05）. CONCLUSION： VNTPS procedure and Deng＇s precut are highly effective methods to get biliary access during ERCP with DBC. With skillful techniques, it can increase the successful rate for deep cannulation of biliary duct and decrease complications. VNTPS technique, especially Deng＇s precut is as effective and

关键词： endoscopic VNTPST sphincterotomy endoscopic retrograde