Ten species of Podagricomela Heikertinger from China are studied. They are Podagricomela apicipennis (Jacoby), P. cupera Wang, P. cyanea Chen, P. flavitibialis Wang, P. geminata Chen et Zia, P. nigricollis Chen, P. ni...Ten species of Podagricomela Heikertinger from China are studied. They are Podagricomela apicipennis (Jacoby), P. cupera Wang, P. cyanea Chen, P. flavitibialis Wang, P. geminata Chen et Zia, P. nigricollis Chen, P. nigripes Medvedev, P. parva Chen et Zia, P. shirahatai (Ch?j?), and P. weisei Heikertinger. Among them, P. nigripes Medvedev is recorded for the first time from China. A key to species from China is given. Illustrations of the male aedeagus and female spermatheca of each species are also given. The geographical distribution in China is analyzed briefly. The result indicates that Podagricomela mainly occurs in southern China, southwestern China, central China and north China, and the distribution center of this genus is in China. They always feed on Rutaceae.展开更多
The present paper deals with the systematic study on the genus Aphytis Howard from South Korea. Five species of Aphytis are recognized, including one new species (Aphytis albus sp. nov.) and four new records (A. diasp...The present paper deals with the systematic study on the genus Aphytis Howard from South Korea. Five species of Aphytis are recognized, including one new species (Aphytis albus sp. nov.) and four new records (A. diaspidis, A. japonicus, A. proclia and A. vandenboschi). A key to the female species of Aphytis from South Korea is provided. The type specimens are respectively deposited in Korea National Arboretum and the Insect Collection of Northeast Forestry University, Harbin, China.展开更多
The genus Acmopolynema Ogloblin is briefly reviewed. Five species from China are described and illustrated. Among which, three species, A. longicoxilla, A. reticoxilla and A. campylura are new to science, ...The genus Acmopolynema Ogloblin is briefly reviewed. Five species from China are described and illustrated. Among which, three species, A. longicoxilla, A. reticoxilla and A. campylura are new to science, two species are first records from China, A key to the five species is provided. All specimens examined are deposited in Biological Control Research Institute, Fujian Agriculture and Forestry University, Fuzhou, China.展开更多
Meta-analysis is a kind of systematic review,which uses quantitative method to summarize the results.It is a comprehensive evaluation to the findings of previous studies with higher credibility.Recently,it is applied ...Meta-analysis is a kind of systematic review,which uses quantitative method to summarize the results.It is a comprehensive evaluation to the findings of previous studies with higher credibility.Recently,it is applied to all areas of scientific research,particularly in the integrated treatment of breast cancer.Currently,breast cancer is known one of the most common malignant tumors,and its incidence is increasing year by year.Therefore,more and more clinical doctors pay attention to the effect of comprehensive treatment for patients with breast cancer.This article mainly collects the results of comprehensive treatment of breast cancer,in which the method of Meta-analysis is applied.In addition,we discuss the latest progress in order to guide the clinical treatment.展开更多
Quantum communications helps us to enhance the security and efficiency of communications and to deepen our understanding of quantum physics. Its rapid development in recent years has attracted the interest of research...Quantum communications helps us to enhance the security and efficiency of communications and to deepen our understanding of quantum physics. Its rapid development in recent years has attracted the interest of researchers from diverse fields such as physics, mathematics, and computer science. We review the background and current state of quantum communications technology, with an emphasis on quantum key distribution, quantum random number generation, and a relatively hot topic: device independent protocols.展开更多
In order to meet the trend of China＇s rapid economic and social development and the internationalization of higher education, a new round of college English teaching reform is ready to start. Following the pilot refo...In order to meet the trend of China＇s rapid economic and social development and the internationalization of higher education, a new round of college English teaching reform is ready to start. Following the pilot reform by colleges and universities in Beijing, some colleges and universities in Shanghai will also initiate college English teaching reform program this fall. According to SCETFR （Shanghai College English Teaching Frame of Reference）, the core of the new round of reform is to replace the traditional integral or comprehensive English with academic English, and through which to strive to improve students＇ English language ability in academic study and profession, and help them build a strong competence in international exchanges and competitions. The author, based on the status quo of China＇s current college English teaching, made some forward-looking predictions to the reform, and put forward some constructive proposals and measures展开更多
Scientific research archives are important parts of the archival management in colleges and universities. Scientific research archives are the direct, harsh but factual historical materials for recording the research ...Scientific research archives are important parts of the archival management in colleges and universities. Scientific research archives are the direct, harsh but factual historical materials for recording the research process of researchers. A scientific and effective management of archives is helpful for promoting the development and progress of science and technology in colleges and universities. The archives can be better managed only if the train of thought for scientific research archives management ideas is known well.展开更多
The Chinese species of Coenosia tigrina species-group of the genus Coenosia Meigen, 1826 are treated . One new species, C.albisquama sp.nov., and two new subspecies, C. attenuata brunnea subsp.nov. and C. strigipes ba...The Chinese species of Coenosia tigrina species-group of the genus Coenosia Meigen, 1826 are treated . One new species, C.albisquama sp.nov., and two new subspecies, C. attenuata brunnea subsp.nov. and C. strigipes bannaensis subsp. nov., are described. A key to Chinese species is given to seperate the species. The types specimens are deposited in the Institute of Entomology, Shenyang Normal University.展开更多
This paper describes new fossils of Equus huanghoensis from an Early Pleistocene bed in Nihewan, Hebei Province, which confirms the classification of E. huanghoensis by Chinese researchers. The new fossils include a r...This paper describes new fossils of Equus huanghoensis from an Early Pleistocene bed in Nihewan, Hebei Province, which confirms the classification of E. huanghoensis by Chinese researchers. The new fossils include a relatively complete male skull and mandible with all upper and lower dentition, a broken female skull with fragment of mandible and a broken Mc III of Equus sp. The fossils were collected from the Yangshuizhan site of Nihewan. The age of the formation is about 1.6 Ma. The new materials verify some classification characteristics based on teeth published in previous descriptions. These characteristics include large teeth size, short protocone, and tilted protoloph and metaloph. We have added to these characteristics of large skull size, a developed protuberantia supramagna, pentagonal nuchal side, weak Pli cabaline, simple enamel plications; a series of new characteristics strikingly different from the other Equus horses. The broken Mc III is similar to Equus qingyangensis from Qingyang, Gansu.展开更多
1 Background Taxonomy is the branch of science dedicated to discovering,characterizing,naming,and classifying objects or organisms so as to understand relationships between them and the factors of their formation.The ...1 Background Taxonomy is the branch of science dedicated to discovering,characterizing,naming,and classifying objects or organisms so as to understand relationships between them and the factors of their formation.The aims of classification are to identify and understand the objects for establishing an orderly system for the grouping objects.展开更多
Two-dimensional(2D)materials possess unique thickness-and lateral-size-dependent properties.Many efforts have been devoted to obtaining 2D materials with narrow structure heterogeneity while it is still challenging to...Two-dimensional(2D)materials possess unique thickness-and lateral-size-dependent properties.Many efforts have been devoted to obtaining 2D materials with narrow structure heterogeneity while it is still challenging to independently control their thickness and lateral size,limiting their widespread applications.Here,we develop a three-step method which achieves independent thickness and lateral size sorting of 2D materials.Taking 2D h-BN flakes as an example,their thickness and lateral size are independently sorted to different fractions with thicknesses smaller than 6 nm.In addition,the 2D h-BN flakes possess narrow distributions of both thickness and lateral size.We further develop a force field extraction method and achieve scalable size sorting of 2D h-BN,which is universal for sorting other 2D materials including MoS2 and graphene oxide.This work reports an effective method to produce structure homogenous 2D materials and will help fundamental studies and applications of 2D materials where thickness and lateral size are of concern.展开更多
Soil, as a survival natural resource for the existent of human beings, is always highly concerned by contemporary scientists. Being a tag to symbolize the development level of soil science, research in soil classifica...Soil, as a survival natural resource for the existent of human beings, is always highly concerned by contemporary scientists. Being a tag to symbolize the development level of soil science, research in soil classification is a focus in today＇s international soil science. In demand by development of China＇s science and economy, NSFC has supported 3 Major Program projects as well as 3 General Program projects in this area since 1986. Under direction of science foundation, more than 200 scientists from 37 various universities and institutes endeavored for 20 years in the establishment of Chinese Soil Taxonomy and its diagnostic systems.展开更多
文摘Ten species of Podagricomela Heikertinger from China are studied. They are Podagricomela apicipennis (Jacoby), P. cupera Wang, P. cyanea Chen, P. flavitibialis Wang, P. geminata Chen et Zia, P. nigricollis Chen, P. nigripes Medvedev, P. parva Chen et Zia, P. shirahatai (Ch?j?), and P. weisei Heikertinger. Among them, P. nigripes Medvedev is recorded for the first time from China. A key to species from China is given. Illustrations of the male aedeagus and female spermatheca of each species are also given. The geographical distribution in China is analyzed briefly. The result indicates that Podagricomela mainly occurs in southern China, southwestern China, central China and north China, and the distribution center of this genus is in China. They always feed on Rutaceae.
基金The project was supported by the Heilongjiang Postdoctoral Funds for ScientificResearch Initiation (LRZ96017) and Korea Science and Engineering Foundation
文摘The present paper deals with the systematic study on the genus Aphytis Howard from South Korea. Five species of Aphytis are recognized, including one new species (Aphytis albus sp. nov.) and four new records (A. diaspidis, A. japonicus, A. proclia and A. vandenboschi). A key to the female species of Aphytis from South Korea is provided. The type specimens are respectively deposited in Korea National Arboretum and the Insect Collection of Northeast Forestry University, Harbin, China.
文摘The genus Acmopolynema Ogloblin is briefly reviewed. Five species from China are described and illustrated. Among which, three species, A. longicoxilla, A. reticoxilla and A. campylura are new to science, two species are first records from China, A key to the five species is provided. All specimens examined are deposited in Biological Control Research Institute, Fujian Agriculture and Forestry University, Fuzhou, China.
文摘Meta-analysis is a kind of systematic review,which uses quantitative method to summarize the results.It is a comprehensive evaluation to the findings of previous studies with higher credibility.Recently,it is applied to all areas of scientific research,particularly in the integrated treatment of breast cancer.Currently,breast cancer is known one of the most common malignant tumors,and its incidence is increasing year by year.Therefore,more and more clinical doctors pay attention to the effect of comprehensive treatment for patients with breast cancer.This article mainly collects the results of comprehensive treatment of breast cancer,in which the method of Meta-analysis is applied.In addition,we discuss the latest progress in order to guide the clinical treatment.
基金supported by the National Basic Research Program of China under Grants No. 2011CBA00200 No. 2011CB921200+2 种基金National Natural Science Foundation of China under Grants No. 60921091 No. 61101137 No. 61201239
文摘Quantum communications helps us to enhance the security and efficiency of communications and to deepen our understanding of quantum physics. Its rapid development in recent years has attracted the interest of researchers from diverse fields such as physics, mathematics, and computer science. We review the background and current state of quantum communications technology, with an emphasis on quantum key distribution, quantum random number generation, and a relatively hot topic: device independent protocols.
文摘In order to meet the trend of China＇s rapid economic and social development and the internationalization of higher education, a new round of college English teaching reform is ready to start. Following the pilot reform by colleges and universities in Beijing, some colleges and universities in Shanghai will also initiate college English teaching reform program this fall. According to SCETFR （Shanghai College English Teaching Frame of Reference）, the core of the new round of reform is to replace the traditional integral or comprehensive English with academic English, and through which to strive to improve students＇ English language ability in academic study and profession, and help them build a strong competence in international exchanges and competitions. The author, based on the status quo of China＇s current college English teaching, made some forward-looking predictions to the reform, and put forward some constructive proposals and measures
文摘Scientific research archives are important parts of the archival management in colleges and universities. Scientific research archives are the direct, harsh but factual historical materials for recording the research process of researchers. A scientific and effective management of archives is helpful for promoting the development and progress of science and technology in colleges and universities. The archives can be better managed only if the train of thought for scientific research archives management ideas is known well.
文摘The Chinese species of Coenosia tigrina species-group of the genus Coenosia Meigen, 1826 are treated . One new species, C.albisquama sp.nov., and two new subspecies, C. attenuata brunnea subsp.nov. and C. strigipes bannaensis subsp. nov., are described. A key to Chinese species is given to seperate the species. The types specimens are deposited in the Institute of Entomology, Shenyang Normal University.
基金National Natural Science Foundation of China(Grant Nos.41290253,41174057)the National Basic Research Program of China(Grant No.2013CB955901)
文摘This paper describes new fossils of Equus huanghoensis from an Early Pleistocene bed in Nihewan, Hebei Province, which confirms the classification of E. huanghoensis by Chinese researchers. The new fossils include a relatively complete male skull and mandible with all upper and lower dentition, a broken female skull with fragment of mandible and a broken Mc III of Equus sp. The fossils were collected from the Yangshuizhan site of Nihewan. The age of the formation is about 1.6 Ma. The new materials verify some classification characteristics based on teeth published in previous descriptions. These characteristics include large teeth size, short protocone, and tilted protoloph and metaloph. We have added to these characteristics of large skull size, a developed protuberantia supramagna, pentagonal nuchal side, weak Pli cabaline, simple enamel plications; a series of new characteristics strikingly different from the other Equus horses. The broken Mc III is similar to Equus qingyangensis from Qingyang, Gansu.
文摘1 Background Taxonomy is the branch of science dedicated to discovering,characterizing,naming,and classifying objects or organisms so as to understand relationships between them and the factors of their formation.The aims of classification are to identify and understand the objects for establishing an orderly system for the grouping objects.
基金the National Natural Science Foundation of China(51920105002,51991340,and 51991343)Guangdong Innovative and Entrepreneurial Research Team Program(2017ZT07C341)+2 种基金the Bureau of Industry and Information Technology of Shenzhen for the“2017 Graphene Manufacturing Innovation Center Project”(201901171523)Shenzhen Basic Research Project(JCYJ20190809180605522,JCYJ20200109144620815 and JCYJ20200109144616617)China Postdoctoral Science Foundation(2020M680540)。
文摘Two-dimensional(2D)materials possess unique thickness-and lateral-size-dependent properties.Many efforts have been devoted to obtaining 2D materials with narrow structure heterogeneity while it is still challenging to independently control their thickness and lateral size,limiting their widespread applications.Here,we develop a three-step method which achieves independent thickness and lateral size sorting of 2D materials.Taking 2D h-BN flakes as an example,their thickness and lateral size are independently sorted to different fractions with thicknesses smaller than 6 nm.In addition,the 2D h-BN flakes possess narrow distributions of both thickness and lateral size.We further develop a force field extraction method and achieve scalable size sorting of 2D h-BN,which is universal for sorting other 2D materials including MoS2 and graphene oxide.This work reports an effective method to produce structure homogenous 2D materials and will help fundamental studies and applications of 2D materials where thickness and lateral size are of concern.
文摘Soil, as a survival natural resource for the existent of human beings, is always highly concerned by contemporary scientists. Being a tag to symbolize the development level of soil science, research in soil classification is a focus in today＇s international soil science. In demand by development of China＇s science and economy, NSFC has supported 3 Major Program projects as well as 3 General Program projects in this area since 1986. Under direction of science foundation, more than 200 scientists from 37 various universities and institutes endeavored for 20 years in the establishment of Chinese Soil Taxonomy and its diagnostic systems.
