检索结果-南通市图书馆

Influence of the concentration of dietary digestible calcium on growth performance,bone mineralization, plasma calcium, and abundance of genes involved in intestinal absorption of calcium in pigs from 11 to 22 kg fed diets with different concentrations of

引用

journal of Animal Science and Biotechnology 2019年第4期10卷 942-957页

作者： L.Vanessa Lagos Su A.Lee Guillermo Fondevila Carrie L.Walk michael R.Murphy juan j.Loor Hans H.Stein Division of Nutritional Sciences University of IllinoisUrbanaIL 61801USA Department of Animal Sciences University of IllinoisUrbanaIL 61801USA Universidad Politécnica de Madrid MadridSpain AB Vista Marlborough SN84ANUK

Background: A 21-day experiment was conducted to test the hypothesis that Ca requirements to maximize growth performance expressed as the standardized total tract digestible(STTD) Ca to STTD P ratio is less than 1.40:1. The second hypothesis was that increasing dietary Ca increases plasma Ca concentration and downregulates abundance of genes related to Ca absorption(TRPV6, S100 G, and ATP2 B1) in the duodenum, and tight junction proteins(OCLN, CLDN1, and ZO1) in the duodenum and ***: Twenty corn-soybean meal diets were formulated using a 4 × 5 factorial design with diets containing 0.16%, 0.33%, 0.42%, or 0.50% STTD P, and 0.14%, 0.29%, 0.44%, 0.59%, or 0.74% STTD Ca. Six hundred and forty pigs(initial weight: 11.1 ± 1.4 kg) were allotted to 20 diets and 5 blocks in a randomized complete block design. On day21, weights of pigs and feed left in feeders were recorded and blood, duodenal tissue, ileal mucosa, and the right femur were collected from 1 pig per pen. Abundance of m RNA was determined in duodenal and ileal tissue via quantitative RT-PCR. Data were analyzed using a response surface ***: The predicted maximum ADG(614 g), G:F(0.65), and bone ash(11.68 g) was obtained at STTD Ca:STTD P ratios of 1.39:1, 1.25:1, and 1.66:1, respectively, when STTD P was provided at the requirement(0.33%). If dietary STTD P was below the requirement, increasing dietary Ca resulted in reduced(P < 0.05) ADG and G:F. However, if dietary STTD P was above the requirement, negative effects(P < 0.05) on ADG and G:F of increasing STTD Ca were observed only if dietary STTD Ca exceeded 0.6%. Plasma Ca concentration was positively affected by STTD Ca over the range studied(quadratic, P < 0.01) and negatively affected by increasing STTD P(linear, P < 0.01). There was a linear negative effect(P < 0.05) of STTD Ca on the abundance of S100 G, TRPV6, OCLN, and ZO1 in duodenum, and CLDN and ZO1 in ***: The STTD Ca:STTD P ratio needed to maximize growth performanc

关键词： Bone ash Calcium absorption Digestible calcium Growth Pigs Requirement

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Ethnic and Religious Violence in South China： The Hakka-Tiandihui Uprising of 1802

引用

Frontiers of History in China 2016年第4期11卷 532-562页

作者： Robert j. Antony Canton's Thirteen Hongs Research Center Guangzhou University Guangzhou 510006 China

In 1802 the second major Tiandihui （Heaven and Earth Society） uprising erupted in the mountains of Huizhou prefecture near Canton. Before it was suppressed over a year later, the disturbances came to involve several tens of thousands of people and nearly a quarter of Guangdong province. This study, which is based on extant historical sources and fieldwork, takes an interdisciplinary approach, combining the methodologies of history, anthropology, and folklore. The areas where the uprising occurred were predominantly Hakka, an ethnic Chinese minority who came into conflict with the earlier settlers, known as the Punti. As violence escalated, both sides organized their own paramilitary units： Hakka formed Tiandihui groups and Punti formed Ox Head Societies. Significantly too, the Tiandihui groups in Huizhou belonged to a much wider network of secret society and sectarian organizations that spread across the Hakka heartland on the jiangxi, Fujian, and Guangdong border. This article addresses key issues concerning the social, political, and religious contexts and motivations of this Hakka-led uprising.

关键词： Hakka Punti Tiandihui ethnic feuds violence Buddhist lay sects Dachengjiao

来源：

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

Complete recovery after the removal of an ectopic testicle in a case of primary reninism and retroperitoneal hemangioma

引用

Asian journal of Andrology 2006年第2期8卷 247-250页

作者： Bemhard Glodny Alexandar Tzankov Germar-michael Pinggera johannes Petersen Ralf Herwig Department of Radiology Medical University of Innsbruck Innsbruck 6020Austria Institute of Patholog Medical University of InnsbruckInnsbruck 6020Austria Department of Urology Medical University of InnsbruckInnsbruck 6020Austria Department of Radiology Medical University of InnsbruckInnsbruck 6020Austria

A 32-year-old man recovered completely from hypokalemic hypertension that had been caused by primary reninism after the ablation of an ectopic left testis, epididymis and ductus deferens. For several years, severe hypertension has been resistant to treatment, even the concurrent administration of up to seven antihypertensive agents. In this case, cryptorchidism was associated with an indirect inguinal hernia and an open peritoneo-vaginal process on both sides, aplasia of the posterior wall of the inguinal canal on the right side, an umbilical hernia, and a retroperitoneal tendrillar hemangioma. （Asian j Androl 2006 Mar; 8： 247-250）

关键词： primary reninism cryptorchidism peritoneo-vaginal process Sertoli-cell-only syndrome hypertension secondary aldosteronism hemangioma

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

商用车涂料为水性聚氨酯涂料拓展更广泛的应用领域

引用

涂料工业 2009年第7期39卷 56-60页

作者： Raul Pires jorg Schmitz Christoph Irle michael Bulanov 张之涵李金旗拜耳材料科技德国51368 拜耳材料科技贸易(上海)有限公司上海聚合物研发中心上海201206

随着环保重要性的不断增加以及法规压力的不断加大,西欧地区形成了各种低排放交通工具涂料的概念。本文着重介绍了双组分水性聚氨酯体系的应用情况,以及相关的原材料、技术和原理。

关键词：双组分聚氨酯水性涂料商用车

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

慢性缺血性皮肤的细胞外基质代谢异常:腿部皮肤溃疡的一个发生机制

引用

世界核心医学期刊文摘（皮肤病学分册） 2006年第3期2卷 19-20页

作者： Dalton S. j. mitchell D. C. Whiting C. V. Tarlton j.F. 李翠华(译) Department of Vascular Surgery Southmead Hospital Bristol United Kingdom 不详

Extracellularmatrix (ECM) metabolism and homeostasis is sensitive to changes in oxygen tension manifest in ischemia. We hypothesize that in chronically ischemic limbs, abnormalities in uninjured skin, secondary to hypoxia, predispose to dermal breakdown. Paired biopsies of uninjured distal ischemic and proximal non-ischemic skin were harvested at below knee amputation from 14 patients with peripheral vascular disease following quantification of ischemia. Age- and site-matched controls were taken at total knee replacement (TKR) and varicose vein (VV) operations. Matrix metalloproteinase (MMP)- 2 and - 9 expression was determined using gelatin zymography, MMP- 1 by western blotting and ELISA and tissue inhibitor of MMP (TIMP) by reverse zymography. Collagen content was measured by determining hydroxyproline levels, and collagen type I synthesis by ELISA. Collagen type I synthesis was upregulated in ischemic tissue compared with non-ischemic matched pairs (p < 0.001) and both TKR and VV controls, however, there was no increase in collagen deposition. Levels of MMP- 2 (p<0.0005) and TIMP- 2 (p<0.01), were elevated in ischemic samples. MMP- 9 was unaltered, signifying no inflammator changes. Tissue ischemia was linked to elevated ECM turnover, associated with matrix failure when compounded with problems of matrix stabilization, likely in ischemia. This represents a potential mechanism for ulcer formation.

关键词：细胞外基质(ECM) 缺血性肢体皮肤溃疡代谢异常慢性 ELISA测定 Western印迹法全膝关节置换术基质金属蛋白酶 MMP-9

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

An Account of Chiral Metal Surfaces and Their Enantiospecific Chemistry

引用

Accounts of Materials Research 2021年第11期2卷 1024-1032页

作者： Andrew j.Gellman Department of Chemical Engineering and W.E.Scott Institute for Energy Innovation Carnegie Mellon UniversityPittsburghPennsylvania 15213United States

CONSPECTUS:Molecular chirality has been of scientific interest since 1848 when Pasteur demonstrated its direct connection to the rotation of light by solutions of chiral *** the 1960s the connection was made between the chirality of pharmaceutical compounds and their physiological impact;one enantiomer can be therapeutic while the other is *** realization prompted enormous effort in the synthesis of enantiomerically pure compounds for bioactive use(a$300B/yr market).Until relatively recently,metals were ignored as potential substrates for asymmetric surface chemistry because metals have highly symmetric,achiral bulk structures and the premise was that they could not expose chiral *** 1996,we demonstrated that the high Miller index surfaces of metals can be chiral,existing in two enantiomeric forms M(hkl)R&S,and we hypothesized that they exhibit enantiospecific interactions with chiral *** such intrinsically chiral metal surfaces have ideal structural motifs based on low Miller index terraces separated by kinked monatomic *** Account begins with a short tutorial on the ideal and real structures of chiral metal surfaces to provide a firm basis for understanding the origin of their *** then chronicles the evolution of our understanding of their enantiospecific interactions with chiral adsorbates.

关键词： chiral metals realization

来源：

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

Development of the pellet injection system on the j-TEXT tokamak

引用

Plasma Science and Technology 2022年第9期24卷 127-133页

作者： Yingzhou jIANG Zhongyong CHEN You LI Wei YAN A LUKIN I VINYAR Feng LI Xin XU Zhipeng CHEN Zhoujun YANG Nengchao WANG Yonghua DING Yuan PAN the j-TEXT Team International joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics State Key Laboratory of Advanced Electromagnetic Engineering and TechnologySchool of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074People’s Republic of China PELIN LLC Saint-Petersburg 190031Russia

Pellet injection is an attractive technology for core-fueling and magnetohydrodynamic study in magnetic-conflnement fusion devices like tokamaks and *** can inject solid hydrogen/deuterium pellets into the plasma with deeper density deposition compared with other fueling methods,such as gas pufflng.A three-barrel H_(2)pellet injection system was installed on the j-TEXT tokamak and experiments were carried *** pellets are formed in three barrels cooled by a cryocooler and compressor system at around 9 K,and are 0.8 mm/1 mm diameter and 0.8 mm *** pellet is launched by helium propellant gas and injected from the lowfleld side of the *** normal range of pellet speed is 210–310 m s^(-1)for different propellant gas *** to the three-barrel structure,the number of injected pellets can be adjusted between one and *** can be launched sequentially with arbitrary time intervals,which enables flexible *** results of the experiments show that pellet fueling efflciency can reach 50%.The energy conflnement time increased by about 7.5–10 ms after pellet injection.

关键词： j-TEXT pellet injection system pellet fueling

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

From Democracy to Bureaucracy： The Baojia in Nationalist Thought and Practice, 1927-1949

引用

Frontiers of History in China 2013年第4期8卷 517-557页

作者： Lane j. Harris History and Asian Studies Departments Furman University Greenville SC 29613 USA

In the 1939 New County Reforms, the Nationalist government made the baojia system the lowest level of self-government in the country. This decision was the result of more than ten years of discussion among Nationalist administrators and writers who were searching for a tutelary system to train the people in their political rights in preparation for constitutional rule. In the 1920s and 1930s, Nationalist writers claimed to be following Sun Zhongshan＇s （Sun Yat-sen） philosophy by reinventing the baojia as a form of democracy. Harkening back to a reimagined national past, they ＂discovered＂ that the imperial baojia was not a system of local control, but a traditional model of bureaucratically-designed local self-government. Nationalist writers dovetailed this new baojia with Sun Zhongshan＇s philosophy in order to rationalize its position as the foundation of the Three Principles of the People State. Once philosophically legitimized, Nationalist writers endorsed the baojia as a top-down bureaucratic system that would transform the political, social, and economic life of the country; it would become the core political unit of their state-making and nation-building projects. In so doing, the baojia came to represent the Nationalists＇ deeply-held belief in the power of human agency to create state institutions capable of entirely remaking society and transforming the nation.

关键词： baojia self-government bureaucracy state-making nation-building,Nationalist Party Sun Zhongshan

来源：

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

Economic Growth and Convergence, Applied to China

引用

China & World Economy 2016年第5期24卷 5-19页

作者： Robert j. Barro Warburg Professor of Economics Economics Department Harvard UniversityUSA

From the perspective of conditional convergence, China＇s GDP growth rate since 1990 has been surprisingly high. However, China cannot deviate forever from the global historical experience, and the per capita growth rate is likely to fall soon from around 8 percent per year to a range of 3-4 percent. China can be viewed as a middle-income convergence success story, grouped with Costa Rica, Indonesia, Peru, Thailand and Uruguay. Upper-income convergence successes （toward which China is likely heading） include Chile, Hong Kong, Ireland, Malaysia, Poland, Singapore, South Korea and Taiwan.

关键词： China convergence dispersion economic growth

来源：

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

The interplay of cell cycle and DNA repair gene alterations in upper tract urothelial carcinoma:predictive and prognostic implications

引用

Precision Clinical Medicine 2020年第3期3卷 153-160页

作者： Panagiotis j.Vlachostergios Department of Medicine Division of Hematology and Medical OncologyWeill Cornell MedicineNew YorkNY 10065USA Department of Medicine Division of Hematology and Medical OncologyNew York Presbyterian Brooklyn Methodist HospitalBrooklynNY 11215USA

Upper tract urothelial carcinoma(UTUC)is rare but can occur sporadically outside the context of Lynch *** these cases,knowing whether non-mismatch repair(MMR),DNA damage response and repair(DDR),and cell cycle gene alterationsmay predict responses to chemotherapy orimmunotherapy and survival is of clinical *** study examined the germline and somatic mutational landscape of two UTUC patients with differential responses to programmed death 1(PD-1)/PD-ligand 1(PD-L1)immune checkpoint inhibitors and queried three independent UTUC cohort studies for co-occurrence of key cell cycle and DDR genes,as well as for their associations with overall survival(OS).TP53 and RB1 emerged as potential determinants of shorter OS in UTUC cohort patients,regardless of concurrent DDR alterations,and if prospectively assessed in larger studies they might also explain resistance to PD-1/PD-L1 blockade despite PD-L1 expression.

关键词： upper tract urothelial carcinoma DNA damage response and repair cell cycle genetic testing genomics mutations

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：