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商品猪PSE肉与正常肉的肉品质和血液生化指标比较

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肉类研究 2024年第5期38卷 15-20页

作者：郑凤玲王怀中郝丽红王诚赵雪艳李菁璇王继英王彦平山东省农业科学院畜牧兽医研究所山东省畜禽疫病防治与繁育重点实验室农业农村部畜禽生物组学重点实验室山东济南250100 山东农业大学动物科技学院山东泰安271018

随机选择392头杜长大实验猪,按标准程序屠宰后采集血液和背最长肌,测定肉质、血常规和血液生化指标,以pH45_(min)、pH_(24h)、滴水损失率、失水率等肉质性状区分实验猪为PSE(pale,soft,and exudative)肉个体和正常肉个体,利用方差分析... 详细信息

随机选择392头杜长大实验猪,按标准程序屠宰后采集血液和背最长肌,测定肉质、血常规和血液生化指标,以pH45_(min)、pH_(24h)、滴水损失率、失水率等肉质性状区分实验猪为PSE(pale,soft,and exudative)肉个体和正常肉个体,利用方差分析和主成分分析比较PSE肉与正常肉的差别,探索通过血液生化指标水平的升降区分PSE肉与正常肉的可行性。结果表明:以pH45_(min)5.0%和失水率>20.0%中2项及以上指标判定,PSE肉发生率为10.2%,屠宰时表型判定PSE肉发生率为9.95%,表型主观和肉质指标判定的一致率为82.5%;PSE肉样本的pH45_(min)、pH_(24h)和肌内脂肪含量均显著低于正常肉样本(P0.05),PSE肉样本的天冬氨酸氨基转移酶、血清肌酐、肌酸激酶、乳酸脱氢酶、尿素、乳酸和葡萄糖含量显著高于正常肉样本(P<0.05),但利用血液生化指标不足以区分PSE肉和正常肉个体。

关键词： PSE猪肉肉品质血常规生化指标

COMPARISON　THEOREMS　TO　BOUNDARY　VALUE　PROBLEMS　FOR　ORDINARY　DIFFERENTIAL　EQUATIONS

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Chinese Annals of Mathematics,Series B 1994年第2期15卷 165-172页

作者： LI YONG wang huaizhong(Department of Matehematics,Jilin University, Changchun 130023, Jilin, China) JILIN UNIV DEPT MATHCHANGCHUN 130023PEOPLES R CHINA

A unified approach is given to several classes of nonlinear boundary value problems, and some previous existence theorems are extended.

关键词： Boundary value problem Existence theorem Brouwer degree,Schauder's fixed point theorem.

ON UNIFORMLY VALID ESTIMATE OF SOLUTIONS TO SINGULAR PERTURBATION ROBIN BOUNDARY VALUE PROBLEM

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Acta Mathematica Scientia 1988年第4期8卷 389-398页

作者：王怀忠周钦德 Dept. of Math. Jilin University Changchun China

In this paper we study the Robin boundary value problem with a small parameterεy″=f（t, y, ω（ε）y′, ε）,a0y（0） +b0y′（0）=（ε）, a1y（1）+b1y′（1）=η（ε）,where the function ω（ε） is continuous on ε≥0 with ω（0）=0. Assuming all known functions are suitably smooth, f satisfies Nagumo’s condition, fy>0, at2-bt2≠0, （-1）iaibi≤0 （i=0, 1） and the reduced equation 0=f（t, y, 0, 0） has a solution y（t）（0≤t≤1）, we prove the existence and the uniqueness of the solution for the boundary value problem and givo an asymptotic expansion of the solution in the power ε1/2 which is uniformly valid on 0≤t≤1.

关键词： ON UNIFORMLY VALID ESTIMATE OF SOLUTIONS TO SINGULAR PERTURBATION ROBIN BOUNDARY VALUE PROBLEM

Deposition Pattern of Inosine Monophosphate( IMP) in Pig Muscle during Cold Storage

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Animal Husbandry and Feed Science 2017年第4期9卷 197-199,218页

作者： Zhu Rongsheng wang huaizhong Lin Song wang Yanping Hu Hongmei Institute of Animal Husbandry and Veterinary Medicine Shandong Academy of Agricultural Sciences/Shandong Provincial Key Laboratory of Disease Control and Animal Breeding

[ Objective] The paper was to investigate the degradation and deposition changes of inosine monophosphate （IMP） and its metabolites in muscle of lean pigs and crossbreeding pigs under cold storage condition at 4℃. [ Method] The contents of IMP and its metabolites in longissimus dorsi of lean pigs and crossbreeding pigs were determined by HPLC method. [ Result] Duroc, Landrace, Yorkshire and DLY pigs shared the same degradation and deposition pattern on IMP, inosine and hypoxanthine. On the second day of cold storage, the content of IMP reached the maximum value, which increased by 0.4% - 15.32% compared with the first day, and then it started to decline. On the fourth day of cold storage, the content of IMP significantly reduced by 23.81% - 39.06% than that on the second day. On the fifth and sixth day of cold storage, the content of IMP kept on falling down slowly and maintained around 1.0 mg/g. While the contents of inosine and hypoxanthine showed an increasing tendency with the extension of cold storage time. [ Conclusion ] Lean pigs Duroc, Landraee and Yorkshire and DLY three- way crossbreeding pigs shared the same degradation and deposition pattern on IMP and its metabolites. With the extension of cold storage, the content of IMP first increased then gradually decreased; while inosine and hypoxanthine gradually increased, and the difference among breeds was not significant.

关键词： Pig muscle IMP Inosine Hypoxanthine Deposition pattern

Fuyang Welcomes Investors From Abroad

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China's Foreign Trade 1996年第8期 50-51页

作者： wang huaizhong,Secretary of CPCLuyang Municipal CommitteeLi Hezhong,Mayor of Fuyang

Fuyang is located in the northwesternpart of Anhui Province,bordering theHuai River to the south and adjoiningCentral China to the *** a populationof 13.33 million,the city covers and area of18,169 square km and has jurisdiction overseven counties and three *** is one ofthe largest cities in the country,with itspopulation,area of farmland and output ofgrains all accounting for one percent of thenation’s total respectively. The Beijing-Kowloon railway runsfor 192 km long through the city’s *** the country’s six largest hubs of rail traffic,the Fuyang railway hub boasts an array of244 parallel tracks laid in its marshallingyard with a daily handling capacity of morethan 10,000 trains and ***

关键词： than more Fuyang Welcomes Investors From Abroad

ADSL, AMPD1, and ATIC Expression Levels in Muscle and Their Correlations with Muscle Inosine Monophosphate Content in Dapulian and Hybridized Pig Species

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Open Journal of Animal Sciences 2017年第4期7卷 393-404页

作者： Rongsheng Zhu Yanping wang huaizhong wang Song Lin Shouli Sun Baohua Huang Hongmei Hu Institute of Animal Science and Veterinary Medicine Shandong Academy of Agricultural Sciences Jinan China Shandong Key Laboratory of Animal Disease Control and Breeding Jinan China

We investigated the relationship between muscle inosine monophosphate (IMP) content and mRNA levels of ADSL, AMPD1, and ATIC in Dapulian (DPL), Landrace × Dapulian (LDPL), and Duroc × Landrace × Dapulian (DLDPL) hybridized pigs. Methods: The total RNA in longissimus dorsi was isolated from Dapulian (DPL), Landrace × Dapulian (LDPL) and Duroc × Landrace × Dapulian (DLDPL) hybridized pigs, weighed about 95.0 kg, n = 8/species. The internal genes with highest stability (YWHAZ and RPL4) were chosen from 11 common internal genes using Quantitative real-time PCR (qPCR) and geNorm software. The mRNA levels of ADSL, AMPD1 and ATIC genes were corrected with YWHAZ and RPL4 genes. The muscular IMP content was determined by HPLC. The muscular IMP content in DPL was higher than that in LDPL and DLDPL, 25.00% (p 0.05) and 15.56% (p > 0.05), respectively. The muscular mRNA level of ADSL gene in DPL and LDPL was higher than that in DLDPL, 24.14% and 12.07%, respectively (p 0.05). The muscular mRNA level of ATIC gene in DPL and LDPL was higher than that in DLDPL, 66.67% and 33.33%, respectively (p 0.05). The muscular mRNA level of AMPD1 gene in DPL and LDPL was higher than that in DLDPL, 14.49% and 33.26%, respectively. Furthermore, the IMP content was positively correlated with the mRNA level of ADSL, AMPD1 and ATIC genes, respectively (p 0.05). The mRNA level of ADSL gene was highly related to that of AMPD1 and ATIC gene, respectively (p 0.01), while that of AMPD1 gene was not strongly correlated with that of ATIC gene (p > 0.05). The muscular mRNA level of AMPD1, ADSL and ATIC genes and the muscular IMP content in DPL were highest, followed by those in LDPL and DLDPL. The muscular IMP content was positively correlated with the muscular mRNA level of ADSL, AMPD1 and ATIC genes, respectively.

关键词： Pigs ADSL Gene AMPD1 Gene ATIC Gene Correlation Inosine Monophosphate

二阶微分方程y″+f(x,y)=0的两点边值问题解的存在和唯一性

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吉林大学自然科学学报 1989年第2期 45-52页

作者：王怀中吉林大学数学系

本文证明了两点边值问题((0.1)式)在满足给出的条件(1)和(2)时有唯一解。

关键词：常微分方程边值问题解存在唯一

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计算机仿真技术在物流研究中的应用

中国市场 2008年第2期 76-77页

作者：高巍王爱文王淮中沈阳化工学院

分析了仿真技术的发展及特点,介绍计算机仿真的类型和基本步骤,阐述了仿真技术对物流系统研究的影响,以及计算机仿真技术在我国物流行业中的应用领域和发展前景。

关键词：物流仿真成本库存

Increased Risk of Neonatal Pneumonia in Pregnant Women with Atypical Pre-Labor Rupture of Membrane Assessed at Pregnancy Week 39

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Open Journal of Obstetrics and Gynecology 2024年第4期14卷 528-534页

作者： Li Fu Haiyan Pei Yuefeng wang Dan Zhang Xiaodan Liu huaizhong Hu Xinghui Liu Department of Gynecology Pengzhou People&#8217s Hospital Chengdu China Department of Ultrasound Examination Pengzhou People&#8217s Hospital Chengdu China Origissay Diagnostics Ltd. Chengdu China Department of Obstetrics and Gynecology Key Laboratory of Birth Defects and Related Diseases of Women and Children Sichuan University Chengdu China Ministry of Education West China Second University Hospital of Sichuan University Chengdu China

Purpose: Neonatal pneumonia is a major newborn disease with a high morbidity rate. We aimed to evaluate whether atypical prelabor rupture of membranes (PROM) is a high-risk factor for causing neonatal pneumonia in a prospective real-world study. Patients and Methods: A total of 250 pregnant women at pregnancy week 39 were non-selectively recruited. All were examined by PROM and neonatal pneumonia related clinical, bedside and lab tests, including body temperature, blood pressure, increased vagina discharge, posterior vault pooling, abdominal tenderness, WBC count, nitrazine test, amniotic fluid index, Leakection (a sICAM-1 based lateral flow immunoassay) and vagina streptococcus examinations. Increased vagina discharge with a Leakection positivity was adopted as a working criterium for identifying atypical PROM. Neonatal pneumonia was diagnosed based on the clinical presentation and lab tests. Results: Twenty cases of neonatal pneumonia (8.0%) were diagnosed after the deliveries of the 250 pregnant women. In these neonatal pneumonia cases, 12 (16.7%) occurred in 72 deliveries with atypical PROM, 2 (16.7%) in 12 deliveries with typical PROM, and 6 (3.6%) in 166 deliveries with non-PROM. Conclusion: In this real-world study, we find that a systematic screening at pregnancy week 39 was very meaningful in revealing atypical PROM. Moreover, atypical PROM is a major risk factor for neonatal pneumonia. Therefore, an early diagnosis and intervention on atypical PROM could potentially reduce the occurrence of neonatal pneumonia.

关键词： Atypical Prelabor Rupture of Membranes Neonatal Pneumonia Soluble Intercellular Adhesion Molecule-1