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"Li, Quan"
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Intelligent Stimuli-Responsive Materials
There has been concerted effort across scientific disciplines to develop artificial materials and systems that can help researchers understand natural stimuli-responsive activities. With its up-to-date coverage on intelligent stimuli-responsive materials, Intelligent Stimuli-Responsive Materials provides research, industry, and academia professionals with the fundamentals and principles of intelligent stimuli-responsive materials, with a focus on methods and applications. Emphasizing nanostructures and applications for a broad range of fields, each chapter comprehensively covers a different stimuli-responsive material and discusses its developments, advances, challenges, analytical techniques, and applications.
eBook
Photoactive Functional Soft Materials
This book covers the design, synthesis, properties, and applications of functional photoactive soft materials, including aspects of polymers, block copolymers, elastomers, biomaterials, liquid crystals, chemical and physical gels, colloids, and host-guest systems.
eBook
تطوير الكفاءة في التجارة الصينية : (كتاب المحادثة)
يتوجه الكتاب بشكل خاص للمستخدمين الذين اكتسبوا سابقا بعض المهارات الأساسية في اللغة الصينية، ويرغبون بتعلم اللغة للقيام بالأعمال التجارية في سياق اللغة الصينية بعبارة أوضح، يستهدف الكتاب المتعلمين الذين أتقنوا حوالى 800 حرف من الأحرف الصينية الشائعة، وحوالى 1000 من التعابير أو الكلمات الصينية، بالإضافة إلى أساسيات القواعد في اللغة الصينية. يمكن أن يستخدم الكتاب ككتاب مدرسي للطلاب الأجانب في الصين الذين يأخذون مقررا اختياريا في التجارة الصينية.
Book
Urban commuting dynamics in response to public transit upgrades: A big data approach
Public transit, especially urban rail systems, plays a vital role in shaping commuting patterns. Compared with census data and survey data, large-scale and real-time big data can track the impacts of urban policy implementations at finer spatial and temporal scales. Therefore, this study proposed a multi-level analytical framework using transit smartcard data to examine urban commuting dynamics in response to rail transit upgrades. The study area was Shenzhen, one of the most highly urbanized and densely populated cities in China, which provides the opportunity to examine the effects of rail transit upgrades on commuting patterns in a rapidly developing urban context. Changes in commuting patterns were examined at three levels: city, region, and individual. At the city level, we considered the average commuting time, commuting speed, and commuting distance across the whole city. At the region level, we analyzed changes in the job accessibility of residential zones. Finally, this study evaluated the potential effects of rail transit upgrades on the jobs-housing relationship at the individual level. Difference-in-difference models were used for causal inference between rail transit upgrades and commuting patterns. In the very short term, the opening of new rail transit lines resulted in no significant changes in overall commuting patterns across the whole city; however, two effects of rail transit upgrades on commuting patterns were identified. First, rail transit upgrades enhanced regional connectivity between residential zones and employment centers, thus improving job accessibility. Second, rail transit improvement increased the commuting distances of individuals and contributed to the separation of workplaces and residences. This study provides meaningful insights into the effects of rail transit upgrades on commuting patterns.
Journal Article
دراسات حول الفضاء العالمي و\الحزام والطريق\ : (مجلد السياحة)
إن استراتيجية \"الحزام والطريق\" هي عملية طويلة الأمد، ولا يمكن وصف دورها في تعزيز تنمية السياحة ببساطة. يحلل \"الفضاء العالمي و\"حزام واحد وطريق واحد\" حجم السياحة\" الوضع الحالي لتنمية السياحة العالمية في سياق استراتيجية \"حزام واحد وطريق واحد\"، ويقدم بالتفصيل تطور السياحة العالمية والخلفية السياحية. \"حزام وطريق\"، بما في ذلك نظرة عامة على صناعة السياحة العالمية، والاتجاهات الجديدة في تنمية السياحة العالمية ونمط السياحة العالمية، وما إلى ذلك، واستنادا إلى تحليل فرص وتحديات تنمية السياحة العالمية والصينية، والتأثير الترويجي لـ \"حزام واحد وطريق واحد\"، وتم تفسير استراتيجية \"الحزام والطريق\" لتنمية السياحة.
Book
Factors Relating to the Biodistribution & Clearance of Nanoparticles & Their Effects on In Vivo Application
Nanoparticles have promising biomedical applications for drug delivery, tumor imaging and tumor treatment. Pharmacokinetics are important for the in vivo application of nanoparticles. Biodistribution and clearance are largely defined as the key points of pharmacokinetics to maximize therapeutic efficacy and to minimize side effects. Different engineered nanoparticles have different biodistribution and clearance processes. The interactions of organs with nanoparticles, which are determined by the characteristics of the organs and the biochemical/physical properties of the nanoparticles, are a major factor influencing biodistribution and clearance. In this review, the clearance functions of organs and the properties related to pharmacokinetics, including nanoparticle size, shape, biodegradation and surface modifications are discussed.
Journal Article
الصين والحوكمة العالمية : الاختيار التاريخي
يقدم هذا الكتاب دراسة وافية لأصل وتاريخ الحوكمة العالمية ومسيرة إصلاحها، مع التركيز على دور ومهام مجموعة العشرين وتطورها، ومقارنة بالدراسات السابقة، نجد أن هذا الكتاب يولي اهتماما بالعدالة والثقافة غير الغربية والدول النامية ودورها في الحوكمة العالمية. كما يستعرض الكتاب تاريخ المشاركة الصينية في الحوكمة العالمية وتطورها من الاقصاء إلى الاعتراف بها، ومن المراقبة إلى المشاركة، ومن الدور العادي إلى الدور الفاعل يتطرق الكتاب كذلك إلى قضية الحوكمة الإقليمية والعلاقات الصينية الأمريكية، وكيفية استغلال الصين المزاياها من أجل أداء دورها بشكل أفضل في الشؤون العالمية. وأخيرا، يقدم توصيات سياسية للصين القيادة إصلاح الحوكمة العالمية، وقد استند المؤلف في جميع هذه المحاور على شهاداته الشخصية أثناء أدائه لمهامه الدبلوماسية. يعد هذا الكتاب مرجعا أساسيا للباحثين في الحوكمة العالمية والدراسات الصينية. والعلاقات الدولية. كما أنه مرجع مهم أيضا للمهتمين بالقضايا الدولية، وخاصة الحوكمة العالمية ودور الصين في الساحة الدولية.
One-time versus repeated abutment connection for platform-switched implant: A systematic review and meta-analysis
This review aims to compare peri-implant tissue changes in terms of clinical and radiographic aspects of implant restoration protocol using one-time abutment to repeated abutment connection in platform switched implant.
A structured search strategy was applied to three electronic databases, namely, Pubmed, Embase and Web of Science. Eight eligible studies, including seven randomised controlled studies and one controlled clinical study, were identified in accordance with inclusion/exclusion criteria. Outcome measures included peri-implant bone changes (mm), peri-implant soft tissue changes (mm), probing depth (mm) and postsurgical complications.
Six studies were pooled for meta-analysis on bone tissue, three for soft tissue, two for probing depth and four for postsurgical complications. A total of 197 implants were placed in one-time abutment group, whereas 214 implants were included in repeated abutment group. The implant systems included Global implants, Ankylos, JDEvolution (JdentalCare), Straumann Bone level and Conelog-Screwline. One-time abutment group showed significantly better outcomes than repeated abutment group, as measured in the standardised differences in mean values (fixed- and random-effect model): vertical bone change (0.41, 3.23) in 6 months, (1.51, 14.81) in 12 months and (2.47, 2.47) in 3 years and soft tissue change (0.21, 0.23). No significant difference was observed in terms of probing depth and complications.
Our meta-analysis revealed that implant restoration protocol using one-time abutment is superior to repeated abutment for platform switched implant because of less bone resorption and soft tissue shifts in former. However, future randomised clinical trials should be conducted to further confirm these findings because of the small samples and the limited quality of the original research.
Journal Article