检索结果-南通市图书馆

Shifts in Carbon Stocks through Soil Profiles Following Management Change in Intensive Agricultural Systems

Agricultural Sciences 2015年第3期6卷 304-314页

作者： Baokun Lei Yongbo Xu Yanfen Tang konrad Hauptfleisch Institute of Agricultural Resources and Environmental Sciences YunnanAcademy of Agricultural Sciences Kunming China Yunnan Agricultural University Kunming China International Federation of Organic Agriculture Movements Nuremberg Germany

Soil carbon content is an important ecosystem property, especially under the ongoing climate change. The stability of soil organic matter (SOM) is controlled by environmental and biological factors including anthropogenic-induced agricultural management change. However, understanding the effects of anthropogenic activities (e.g., intensive agricultural practices) on carbon stability of soil profiles remains a challenge. The objective of this study was to determine the changes in carbon stocks through soil profiles following agricultural management change from grain fields to greenhouse vegetable fields. The sampling sites were located in an intensive vegetable production area in northernChina. A total of 20 pairs of grain fields (GF) and adjacent vegetable fields (VF) within a distance of50 mwere selected. The results showed that soil organic carbon (SOC) storage increased by 10.6 mg C ha-1 in upper soil layers but decreased by 5.3 mg C hm2 indeeper soil layers due to large input of organic manure and chemical fertilizer following the conversion from GF to VF. Conversion to VF also led to increased dissolved organic carbon (DOC) and dissolved organic nitrogen (DON) concentrations. Extremely higher input of chemical N fertilizer in the VF led to the soil C:N ratio decreased by 2.02 times and the -N leached to deeper soils increased by 3.7 times compared to that in the GF. The pH value and microbial biomass carbon (MBC) content were lower in the VF than in the GF. These results indicate that excessive nitrogen application as fertilizers might lead to deeper soil carbon depletion. Reducing nitrogen addition in intensive agricultural systems is thus necessary to reduce soil carbon loss and to maintain a relatively sustainable soil system.

关键词： Carbon Sequestration Intensive Agricultural Systems Fertilization Soil Profiles

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

Multiphoton synthetic lattices in multiport waveguide arrays: synthetic atoms and Fock graphs

引用

Photonics Research 2020年第7期8卷 1161-1170页

作者： konrad Tschernig Roberto de J.León-Montiel Armando Pérez-Leija Kurt Busch Max-Born-Institut 12489 BerlinGermany Instituto de Ciencias Nucleares Universidad Nacional Autónoma de MéxicoApartado Postal 70-54304510 Cd.Mexico CityMexico Humboldt-Universität zu Berlin Institut für PhysikAG Theoretische Optik&Photonik12489 BerlinGermany

Activating transitions between internal states of physical systems has emerged as an appealing approach to create lattices and complex *** such a scheme,the internal states or modes of a physical system are regarded as lattice sites or network nodes in an abstract space whose dimensionality may exceed the systems’apparent(geometric)*** introduces the notion of synthetic dimensions,thus providing entirely novel pathways for fundamental research and ***,we analytically show that the propagation of multiphoton states through multiport waveguide arrays gives rise to synthetic dimensions where a single waveguide system generates a multitude of synthetic *** these synthetic lattices exist in photon-number space,we introduce the concept of pseudo-energy and demonstrate its utility for studying multiphoton interference ***,the spectrum of the associated pseudo-energy operator generates a unique ordering of the relevant *** with generalized pseudo-energy ladder operators,this allows for representing the dynamics of multiphoton states by way of pseudo-energy term diagrams that are associated with a synthetic *** a result,the pseudo-energy representation leads to concise analytical expressions for the eigensystem of N photons propagating through M nearest-neighbor coupled *** the regime where N≥2 and M≥3,nonlocal coupling in Fock space gives rise to hitherto unknown all-optical dark states that display intriguing nontrivial dynamics.

关键词： synthetic dimensions system

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

经典型Richter综合征转化前后IgVH基因克隆重排及突变分析

引用

中华病理学杂志 2008年第6期37卷 364-370页

作者：毛峥嵘 Andreas Rosenwald 章锁江周韧 Hans konrad Mueller-Hermelink 浙江大学医学院病理与病理生理学系杭州310058 Pathology Institute Wuerzburg University Germany

目的检测经典型Richter综合征的IgVH基因克隆重排及突变状态，分析转化前后IgVH基因的分子特征及其与预后的关系，并对可能涉及的分子机制进行初步探讨。方法用基因扫描和测序分析IgVU基因。另外用免疫组织化学LAB—SA法检测两种肿瘤中z... 详细信息

目的检测经典型Richter综合征的IgVH基因克隆重排及突变状态，分析转化前后IgVH基因的分子特征及其与预后的关系，并对可能涉及的分子机制进行初步探讨。方法用基因扫描和测序分析IgVU基因。另外用免疫组织化学LAB—SA法检测两种肿瘤中zeta链结合蛋白激酶70（ZAP70）、p53、干扰素调节因子（IRF）-4等可能潜在危险因子的表达，并结合随访资料进行生存率分析，筛选危险因子。结果（1）B—CLL／DLBCL克隆相关（18／23，78．3％），克隆不相关（5／23，21．7％）；（2）在16例克隆相关中，12例转化前B-CLL及转化后DLBCL携带未突变IgVH基因；（3）转化前后IgVH基因使用是非随机的，在克隆相关的病例中，B-CLL／DLBCL最常使用VH3-23、VH3-74、VH1-2，各占11．1％；（4）转化后DLBCL仅部分表达CD5（32．1％）和CD23（14．3％）及ZAP70（23．8％），绝大多数表达p53（80．6％）和IRF-4（82．6％）；（5）17例转化后DLBCL患者中位生存时间为7个月；（6）统计学分析生存时间与B—CLL／DLBCL转化前后克隆相关与否、IgVH基因的突变状态、ZAP70、p53、IRF-4的表达不相关。结论（1）转化后DLBCL中克隆相关与克隆不相关的比例为2：1；（2）克隆相关的DLBCL多由携带未突变型IgVH基因的B—CLL患者转化而来；（3）发生转化的B—CLL中IgVH基因使用的偏向性提示了抗原在转化中的可能作用；（4）转化后DLBCL与普通DLBCL在IgVH基因的使用、突变状态，免疫表型及预后的不同，提示其可能是一种新的DLBCL亚类。

关键词：淋巴瘤大细胞弥漫型白血病淋巴细胞慢性突变免疫表型分型基因重排 B淋巴细胞重链

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

PowerPoint 2000快速突破

引用

2000年

作者：（美）konrad King 林鸿飞等译

本书讲述如何利用PowerPoin内容提示向导制作最简单的演示文稿文件开始，逐渐深化到制作包含图表、图片、声音、视频和动画的具有专业水准的幻灯片，最后讲述了PowerPoin 2000的Web功能等。

ISBN: (纸本)7111013239

关键词：图形软件

来源：畅想之星图书光盘版（南... 评论

在线全文

畅想之星图书光盘版（南通市图书馆镜像）

学校读者我要写书评

暂无评论

霍奇金淋巴瘤亚型Richter综合征免疫球蛋白重链可变区基因突变及克隆相关性分析

引用

中华病理学杂志 2008年第8期37卷 523-528页

作者：毛峥嵘 Andreas Rosenwald 章锁江周韧 Hans konrad Mueller-Hermelink 浙江大学医学院病理与病理生理学系杭州310058 Pathology Institute Wuerzburg University Germany

目的检测霍奇金淋巴瘤（HL）亚型Richter综合征免疫球蛋白重链可变区（IgVH）基因重排、突变、克隆相关性等基因特征及其与预后的关系，初步探讨其可能涉及的分子机制。方法用基因扫描分析HL亚型Richter综合征及慢性B淋巴细胞性白血病（... 详细信息

目的检测霍奇金淋巴瘤（HL）亚型Richter综合征免疫球蛋白重链可变区（IgVH）基因重排、突变、克隆相关性等基因特征及其与预后的关系，初步探讨其可能涉及的分子机制。方法用基因扫描分析HL亚型Richter综合征及慢性B淋巴细胞性白血病（B—CLL）伴CD30阳性R—S细胞样细胞病例IgVH基因的克隆性重排，测序分析IgVH基因的突变状态及其分子特征；用激光显微切割结合半套式PCR扩增R—S细胞和R—S细胞样细胞的IgVH基因，比较两种肿瘤成分的克隆相关性；用免疫组织化学LAB—SA法检测两种肿瘤中zeta相关蛋白70（ZAP70）、p53、干扰素调节因子4（IRF-4）及EB病毒潜伏膜蛋白-1（LMP1）等因子表达的不同。结果（1）6例向HL转化及6例向R—S细胞样细胞转化的B—CLL患者中，携带突变型IgVH基因的患者各占5例；（2）4例IgVH基因克隆相关性分析中，与相应B—CLL克隆不相关的2例R-S细胞和1例R—S细胞样细胞表达LMP1。而1例与B—CLL来自相同克隆的R—S细胞样细胞不表达LMP1；（3）HL亚型Richter综合征中B—CLL肿瘤细胞常使用的IgVH基因是VH3和VH4家族，6例中各有2例使用VH4—34和VH3-48基因。结论（1）转化的HL和R—S细胞样细胞主要与生发中心或生发中心后的B—CLL有关，提示不同类型的Richter综合征可能涉及的发病机制不同；（2）HL与R—S细胞样细胞既可以是B—CLL克隆相关病例，也可以是克隆不相关的病例。而后者可能与B—CLL患者免疫抑制后继发EB病毒感染有关；（3）IgVH基因在HL亚型Richter综合征B—CLL中的偏向性使用，提示抗原在转化中的作用。

关键词：淋巴瘤白血病,粒细胞,慢性突变免疫表型分型基因重排,B淋巴细胞,重链

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

三维场景全自动建模及精度分析

引用

测绘科学 2017年第2期42卷 187-191页

作者：付海龙 ROTHERMEL Mathias WENZEL konrad HALAA Norbert 斯图加特大学德国斯图加特70174 r.Frames GmbH 德国斯图加特70176

针对摄影测量三维建模向全自动化发展的背景,该文基于SURE摄影测量软件,实现了自动化建立三维场景。阐述了主要的处理环节,包括密集匹配、平差交会、三角构网及贴图等,可生产的产品包括密集点云、真正射影像、数字表面模型、不规则三角... 详细信息

针对摄影测量三维建模向全自动化发展的背景,该文基于SURE摄影测量软件,实现了自动化建立三维场景。阐述了主要的处理环节,包括密集匹配、平差交会、三角构网及贴图等,可生产的产品包括密集点云、真正射影像、数字表面模型、不规则三角网及三维贴图场景;通过分析匹配效率及点云和数字表面模型的精度,显示出其产品均可达到测量级精度。使用高重叠度或倾斜影像,SURE还可以生产出精美的三维城市模型;充分挖掘每一个像素的高精度三维坐标,是其在同类软件中的一大特色。

关键词： SURE软件密集匹配点云数字表面模型真正射影像三维场景重叠度

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

Reducing psychiatric illness in the perinatal period:A review and commentary

引用

World Journal of Psychiatry 2023年第4期13卷 149-160页

作者： Jessica Rohr Farhaan S Vahidy Nicole Bartek Katelynn A Bourassa Namrata R Nanavaty Danielle D Antosh konrad P Harms Jennifer L Stanley Alok Madan Department of Psychiatry and Behavioral Health Houston MethodistHoustonTX 77030United States Department of Neurosurgery Houston MethodistHoustonTX 77030United States Department of Obstetrics and Gynecology Houston MethodistHoustonTX 77030United States

This brief overview highlights the global crisis of perinatal psychiatric illness(PPI).PPI is a major contributor to many adverse pregnancy,childbirth,and childhood development *** contributes to billions of dollars in spending worldwide each year and has a significant impact on the individual,their family,and their *** is also highly *** recommendations for intervention and management of PPI are limited and vary considerably from country to ***,there are several significant challenges associated with implementation of these *** challenges are magnified in number and consequence among women of color and/or minority populations,who experience persistent and negative health disparities during pregnancy and the postpartum *** paper aims to provide a broad overview of the current state of recommendations and implementation challenges for PPI and layout a framework for overcoming these *** equityinformed model of care that provides universal intervention for pregnant women may be one solution to address the preventable consequences of PPI on child and maternal ***,this model emphasizes the importance of managing and eliminating known barriers to traditional health care *** and contextually specific challenges must be overcome to fully realize the impact of improved management of PPI.

关键词： Perinatal psychiatric illness Postpartum depression Equity-oriented care Minority populations Maternal mortality Pregnancy

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

ConGrap -Contour Detection Based on Gradient Map of Images

引用

Computer Technology and Application 2011年第8期2卷 628-637页

作者： Frank Nagl konrad Kolzer Paul Grimm Tobias Bindel Stephan Rothe Applied Computer Science Fulda University of Applied Sciences Fulda D-36039 Germany Applied Computer Science Erfurt University of Applied Sciences Erfurt D-99085 Germany

In this paper, the authors present ConGrap, a novel contour detector for finding closed contours with semantic connections. Based on gradient-based edge detection, a Gradient Map is generated to store the orientation of every edge pixel. Using the edge image and the generated Gradient Map, ConGrap separates the image into semantic parts and objects. Each edge pixel is mapped to a contour by a three-stage hierarchical analysis of neighbored pixels and ensures the closing of contours. A final post-process of ConGrap extracts the contour borderlines and merges them, if they semantically relate to each other. In contrast to common edge and contour detections, ConGrap not only produces an edge image, but also provides additional information （e.g., the borderline pixel coordinates the bounding box, etc.） for every contour. Additionally, the resulting contour image provides closed contours without discontinuities and merged regions with semantic connections. Consequently, the ConGrap contour image can be seen as an enhanced edge image as well as a kind of segmentation and object recognition.

关键词： Pattern recognition contour detection edge detection segmentation gradient map.

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 Anterior Spreader Flap: A Minimally Invasive Alternative to the Auto Spreader Flap in the Treatment of Patients with Nasal Valve Dysfunction

引用

International Journal of Otolaryngology and Head & Neck Surgery 2014年第4期3卷 184-189页

作者： Stephan Bessler konrad Mende Leonid Goubergrits Jan Osman Benedikt Strub Biofluid Mechanics Lab Institute of Laboratory Medicine Charité Berlin Germany Clinic for Hand- Plastic- and Reconstructive Surgery Cantonal Hospital Aarau Switzerland Clinic for Head and Neck Surgery Zurich Switzerland

We present a new method of treatment for nasal valve dysfunction caused by insufficiency or stenosis in a patient who refused open septum revision despite a significant degree of septum deviation. The Anterior Spreader Flap (ASF) technique was suggested as an alternative to open nasal septum revision and was performed under local anesthesia. Computational fluid dynamics (CFD) tests were performed pre- and post-operatively and our patient was asked to complete a self-assessment using a Visual Analog Scale (VAS) for nasal breathing (0 = free nasal breathing, 10 = complete nasal blockage) before and 12 months after surgery. The ASF is a minimally invasive endonasal procedure in which the caudal edge of the upper lateral cartilage is dissected from the septum, and folded inwards and fixed. The ASF allows for less airflow resistance and more free space. CFD techniques revealed a reduction in local pressure based on extended space. In addition, VAS scores improved from 9 to 2 points (right side) and from 8 to 2 points (left side). On the basis of these findings, the ASF technique can be considered a safe, minimally invasive spreader flap technique. It can easily be combined with other nasal surgical techniques, as it is necessary in most cases. In selected cases, the ASF may be performed as a single procedure in patients with nasal valve dysfunction caused by septum deviation as an alternative to open septum revision.

关键词： Spreader Flap Anterior Spreader Flap Nasal Valve Nasal Valve Dysfunction

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

狗的家世

引用

丛书名：万川科学人文书系：2

1998年

作者：（奥）劳伦兹 = konrad Lorenz 胡小兵译

本书讲述了在远古时代，狗的祖先和人类结成了一种生命和利益共同体，这种共同体随着时间的推移不断深化了人类和动物间的友情。

ISBN: (纸本)7801017439

本书讲述了在远古时代，狗的祖先和人类结成了一种生命和利益共同体，这种共同体随着时间的推移不断深化了人类和动物间的友情。

关键词：犬普及读物

来源：汇雅图书（南通市图书馆... 评论

在线全文

汇雅图书（南通市图书馆）

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：