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添加不同比例啤酒糟对育肥山羊生长性能、血清生化指标、屠宰性能和肉品质的影响

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江苏农业学报 2024年第3期40卷 500-507页

作者：王应归杨献康李鹏程訾云秀赵旺生朱江江青藏高原动物遗传资源保护与利用四川省重点实验室/西南民族大学四川成都610041 西南科技大学生命科学与工程学院四川绵阳621010

本研究旨在探究山羊日粮中添加不同比例啤酒糟对育肥山羊生长性能、血清生化指标、屠宰性能和肉品质的影响。随机选取24只身体状况良好、体质量相近的3月龄简州大耳羊羯羊,分为4组,分别饲喂添加0、42.90%、48.00%、53.00%啤酒糟的日粮... 详细信息

本研究旨在探究山羊日粮中添加不同比例啤酒糟对育肥山羊生长性能、血清生化指标、屠宰性能和肉品质的影响。随机选取24只身体状况良好、体质量相近的3月龄简州大耳羊羯羊,分为4组,分别饲喂添加0、42.90%、48.00%、53.00%啤酒糟的日粮。试验周期为70 d,其中预饲期14 d,正式期为56 d。结果表明,与对照相比,在日粮中添加48.00%啤酒糟处理的山羊只均经济利润显著提高,并且该处理对血清生化指标、屠宰性能和内脏指标无不利影响,还在一定水平上改善了山羊肉品质。综上所述,本研究条件下,在简州大耳羊羯羊日粮中添加啤酒糟的最适比例为48.00%。

关键词：啤酒糟简州大耳羊屠宰性能肉品质血清生化指标生长性能

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Pinning Potential and Critical Current Densities in Powder Melting Processed Y(Ho)BCO Samples

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Chinese Physics Letters 1993年第11期10卷 688-691页

作者： LIU peng LI Jingwei YIN Bo-GUO Shuquan zhao Zhongxian FENG Yong ZHOU Lian National Laboratory for Superconductivityt Institute of Physics Academia SinicuBering 100080 Department of Physics Shanxi Normal UniversityXi'an 710062 Northwestern Institute£or Non-ferrous Metal Researcht Baoji 721014

M&gnetic relaxation and magnetization of the powder melting Y_(1-x)Ho_(x)Ba_(2)Cu_(3)O_(7)(x=0.2,0.4 and 0.6)samples have been measured at the temperature of *** pinning potential U and magnetization critical current density J_(c) have been obtained according to the Anderson-Kim model and Bean *** is found that both U and J_(c) were in^uenced by doping *** the sample with x=0.4 the pinning potential U has a value of 3.2 eV when the Held is equal to 1 kG and parallel to c-axis,which is the highest one we have known in the high Tc superconductors.

关键词： magnetization x=0 relaxation

The “Valley Economy” Model of Regional Development: A Case Study of Mountain Areas in Beijing, Northern China

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Journal of Mountain Science 2014年第5期11卷 1372-1382页

作者： LIU chun-la CHEN Ming-xing TANG Zhi-peng LIU Wei-dong LU Da-dao ZHANG Yi-feng Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences University of Chinese Academy of Sciences

A case study is presented of a regional development model for valley economies in the mountain areas of Beijing, China. The nature and framework of the valley economy model are described and the development of the model, which is specific to the mountain areas of Beijing, is analyzed. Five different valley economy models applied in the Beijing mountain areas are compared. The major purpose of the valley economy model is to develop the regional economy, including the selection of appropriate industries, the allocation of industrial space, the establishment of supply chains and the integration of various industries. Pilot experiments using the valley economy model have been conducted in seven counties(districts) in Beijing: Pinggu, Huairou, Changping, Mentougou, and Fangshan districts, and Yanqing and Miyun counties. Five models for developing the Beijing mountain areas have been explored, including: creative cultural industries, characteristic industry clusters, the promotion of large tourist areas, natural scenic tourism and folk cultural tourism. Each model has its own unique features and potential to help in the regional development of mountain areas.

关键词： Beijing Mountainous areas Regional development Valley economy model

A STUDY ON THE RELATION BETWEEN THE VARIATION OF THE PRECIPITATION IN EASTERN JIANGHUAI WATERSHED AND SEDIMENT TRANSPORT IN CHIHE RIVER VALLEY

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Chinese Geographical Science 2002年第1期12卷 44-49页

作者： ZHANG Jian chun, peng Pu zhuo(Department of Urban and Resources Sciences,Nanjing University,Nanjing 210093,P.R.China ) Department of Urban and Resources Sciences Nanjing University Nanjing P. R. China

Rainfall resource is very important to the development of society and economy,especially to eastern Jianghuai watershed which is now facing serious challenge of water shortage. Based on the observational records covering the period from 1957 to 1999,the characteristics of precipitation changing over eastern JiangHuai watershed and its connection to sediment discharge in Chihe River valley were studied using tendency analysis and correlation analysis .Results show that the rainfall in this area had a declining tendency in Spring at a rate of -21.2mm/10a, annual and Summer precipitation was increasing at the rate of 10.6mm/10a and 14.8mm/10a. The gray correlation analysis shows that sediment discharge correlates most closely with runoffs and the frequency of the rainstorm with a daily precipitation of 50-100mm, on the second place,with the rainfall and the frequency of the rainstorm of a daily precipitation no less than 100mm;and thirdly with the number of rainy days. In addition, the paper suggests the major countermeasures and methods for controlling of soil and water losses in this area.

关键词： eastern Jianghuai watershed Chihe River rainfall sediment discharge correlation grade

Graphitic Carbon Quantum Dots Modified Nickel Cobalt Sulfide as Cathode Materials for Alkaline Aqueous Batteries

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Nano-Micro Letters 2020年第2期12卷 1-18页

作者： Yirong Zhu Jingying Li Xiaoru Yun Ganggang zhao peng Ge Guoqiang Zou Yong Liu Hongshuai Hou Xiaobo Ji College of Metallurgy and Material Engineering Hunan University of TechnologyZhuzhou 412007People’s Republic of China College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083People’s Republic of China State Key Lab of Powder Metallurgy Central South UniversityChangsha 410083People’s Republic of China

Carbon quantum dots(CQDs)as a new class of emerging materials have gradually drawn researchers’concern in recent *** this work,the graphitic CQDs are prepared through a scalable approach,achieving a high yield with more than 50%.The obtained CQDs are further used as structure-directing and conductive agents to synthesize novel N,S-CQDs/NiCo2S4 composite cathode materials,manifesting the enhanced electrochemical properties resulted from the synergistic effect of highly conductive N,S-codoped CQDs offering fast electronic transport and unique micro-/nanostructured NiCo2S4 microspheres with Faradaic redox characteristic contributing large ***,the nitrogen-doped reduced graphene oxide(N-rGO)/Fe2O3 composite anode materials exhibit ultrahigh specific capacity as well as significantly improved rate property and cycle performance originating from the high-capacity prism-like Fe2O3 hexahedrons tightly wrapped by highly conductive N-rGO.A novel alkaline aqueous battery assembled by these materials displays a specific energy(50.2 Wh kg^−1),ultrahigh specific power(9.7 kW kg^−1)and excellent cycling performance with 91.5%of capacity retention at 3 A g^−1 for 5000 *** present research offers a valuable guidance for the exploitation of advanced energy storage devices by the rational design and selection of battery/capacitive composite materials.

关键词： Energy storage Alkaline aqueous batteries Carbon quantum dot Nickel cobalt sulfide

Effects of silicon amendment on the occurrence of rice insect pests and diseases in a field test

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Journal of Integrative Agriculture 2018年第10期17卷 2172-2181页

作者： HAN Yong-qiang WEN Ji-hui peng zhao-pu ZHANG De-yong HOU Mao-lin Institute of Plant Protection Hunan Academy of Agricultural Sciences Changsha 410125 P.R.China State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant Protection Chinese Academy of Agricultural Sciences Beijing 100193 P.R.China Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China Changsha 410128 P.R. China

Rice is one of the most important staple foods for the world population,but it is attacked by a number of destructive *** evidence from greenhouse and laboratory tests has shown that silicon（Si）amendment can confer enhanced resistance to pests in rice,few studies have directly demonstrated the Si-mediated protection from pests in a field *** this study,field plots with silicon amendments at 0,75,150 and 300 kg SiO2 ha-1 in early-and late-season rice were employed to evaluate the effects of silicon amendment on the occurrence of major insect pests and diseases and rice *** with the control plots without silicon amendment,plant damage by stem borer and leaf folder and population size of planthopper were significantly lower in three to five of the seven monitoring observations in each season in the plots amended with 300 kg SiO2 *** disease index of rice blast in the early-season rice was lower in the plots amended with Si at 300 kg SiO2 ha-1 than in the control plots,while Si protection from rice blast in the late-season rice and from rice sheath blight in the early-season rice were not *** insignificant increase of rice yield by 16.4%（604 kg ha-1）was observed in the plots amended with 300 kg SiO2 ha-1 over the control *** results indicate that Si amendment at 300kg SiO2 ha-1 can provide substantial protection from some of the rice pests under field *** findings support the recommendation of silicon amendment as a key component of integrated management of rice pests.

关键词： silicon rice insect pest disease yield plant resistance

低温纤维素降解菌假裸囊菌SDF-LT的分离、鉴定及其对玉米秸秆降解特性的研究

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中国土壤与肥料 2024年第4期 222-227页

作者：黄媛媛黄亚丽张翔赵芊张树明张智英彭正萍河北农业大学资源与环境科学学院/河北省农田生态环境重点实验室/华北作物改良与调控国家重点实验室河北保定071001 河北省科学院生物研究所河北石家庄050081 河北科技大学环境科学与工程学院河北石家庄050018 唐山市耕地质量保护中心河北唐山063000 黄骅市自然资源和规划局河北黄骅061100

为筛选低温高效纤维素降解真菌,从河北省石家庄、邢台、唐山等地区的小麦-玉米轮作农田采集土壤39份作为分离样品。在10℃条件下,采用纤维素钠-刚果红培养基测定菌株透明圈大小;测定滤纸酶活性进行酶活性比较,最终筛选得到1株低温高效... 详细信息

为筛选低温高效纤维素降解真菌,从河北省石家庄、邢台、唐山等地区的小麦-玉米轮作农田采集土壤39份作为分离样品。在10℃条件下,采用纤维素钠-刚果红培养基测定菌株透明圈大小;测定滤纸酶活性进行酶活性比较,最终筛选得到1株低温高效纤维素降解真菌SDF-LT,根据菌株形态学和ITS序列分析鉴定为假裸囊菌(Pseudogymnoascus)。采用自然低温条件下沙袋法测定菌株SDF-LT的秸秆降解能力,发现接种该菌株的玉米秸秆降解率在80 d时为42.67%,显著高于市售秸秆降解菌剂和空白对照。80 d时SDF-LT处理的玉米秸秆中纤维素、半纤维素和木质素含量最少,分别为26.79%、28.52%、4.41%,显著低于常温秸秆降解菌剂和空白对照;采用扫描电镜观察秸秆的纤维结构发现,SDF-LT处理的秸秆纤维束结构断裂,纤维结构高度破坏。筛得的菌株SDF-LT为玉米秸秆的降解提供了菌种资源。

关键词：低温玉米秸秆菌株筛选假裸囊菌秸秆降解率

A catalyst-free novel synthesis of diethyl carbonate from ethyl carbamate in supercritical ethanol

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Chinese Chemical Letters 2014年第10期25卷 1395-1398页

作者： Li-Cai zhao Zhi-Qiang Hou chun-Ze Liu Yuan-Yuan Wang Li-Yi Dai Department of Chemistry East China Normal University

Diethyl carbonate has been synthesized via the alcoholysis of ethyl carbamate in supercritical ethanol under catalyst-free *** influences of various parameters such as reaction temperature,reaction time,reaction pressure,ethanol/ethyl molar ratios and reaction loading volume on the yield of DEC were studied *** experimental results indicated that the alcoholysis of ethyl carbamate was greatly improved in supercritical *** optimal reaction conditions were as follows：a reaction temperature of 573 K,a reaction time of 30 min,a reaction pressure of 13.2 MPa,an ethanol/ethyl carbamate molar ratio of 10 and a reactor loading volume of 285 μL *** optimal yield of DEC was 22.9%.

关键词： Supercritical ethanol Diethyl carbonate Ethyl carbamate Alcoholysis

The synthesis and bioevaluation of the dicyclic arene-homospermidine conjugates

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Chinese Chemical Letters 2007年第8期18卷 923-925页

作者： peng Fei Cheng Jian Hong Wang Song Qiang Xie Jin zhao Chao Jie Wang Institute of Natural Products ＆ Medicinal Chemistry College of Chemistry and Chemical Engineering Henan University Kaifeng 475001 China pharmaceutical College Henan University Kaifeng 475001 China

Four novel dicyclic arene-homospermidine conjugates （6a-d） were synthesized and evaluated for cytotoxicity in L1210, α- difluoromethylomithine （DFMO） treated L1210, melanoma B16, spermidine （SPD） treated B16, and Hela cells. In the DFMOtreated L 1210 experiments, 6a-d were more sensitive to DFMO than naphthalene-homospermidine （6e）, suggesting that 6a-d can utilize the polyamine transporter （PAT） to enter the cells as well as 6e. The diminished cytotoxicity in the SPD/B 16 experiments also supported this conclusion. In summary, the homospermidine is an efficacious vector to ferry dicyclic arenes into cells via PAT.

关键词： Polyamine conjugate Synthesis Bioevalution