检索结果-南通市图书馆

New species and unexpected diversity of socially parasitic bees in the genus Inquilina Michener （Hymenoptera： Apoidea： Apidae）

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

Insect Science 2009年第4期16卷 343-350页

作者： Jaclyn A. Smith michael P. schwarz Flinders University School of Biological Sciences Adelaide South Austrafia Australia

Allodapine bees present particular problems for taxonomy due to a high level of morphological conservatism in adults, even between genera. However, this tribe of bees also presents a unique opportunity to explore the evolution of social parasitism because of the comparatively large number of origins of socially parasitic species. Morphological differences presented here, along with DNA sequence data and molecular phylogenetic analyses, indicate a much larger number of Australian social parasite species in the genus Inquilina than previously anticipated, and suggest that the final number of socially parasitic species may be considerable. We describe five new species and present sequence data that will help elucidate the delineation of further new species. Inquilina provides a unique opportunity to study the evolution of social parasitism in social insects, but further studies will need to encompass both population genetic and phylogenetic approaches.

关键词： Allodapine bee molecular phylogenetics social parasite

Malware Guard Extension:abusing Intel SGX to conceal cache attacks

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cybersecurity 2020年第1期3卷 22-41页

作者： michael schwarz Samuel Weiser Daniel Gruss Clementine Maurice Stefan Mangard Graz University of Technology GrazAustria CNRS IRISARennesFrance.

In modern computer systems,user processes are isolated from each other by the operating system and the ***,in a cloud scenario it is crucial that the hypervisor isolates tenants from other tenants that are co-located on the same physical ***,the hypervisor does not protect tenants against the cloud provider and thus,the supplied operating system and *** SGX provides a mechanism that addresses this *** aims at protecting user-level software from attacks from other processes,the operating system,and even physical *** this paper,we demonstrate fine-grained software-based side-channel attacks from a malicious SGX enclave targeting co-located *** attack is the first malware running on real SGX hardware,abusing SGX protection features to conceal ***,we demonstrate our attack both in a native environment and across multiple Docker *** perform a Prime+Probe cache side-channel attack on a co-located SGX enclave running an up-to-date RSA implementation that uses a constant-time multiplication *** attack works,although in SGX enclaves,there are no timers,no large pages,no physical addresses,and no shared *** a semi-synchronous attack,we extract 96%of an RSA private key from a single *** extract the full RSA private key in an automated attack from 11 traces within 5 min.

关键词： Intel SGX Side channel Side-channel attack Prime+Probe

The impact of kleptoparasitic invasions on the evolution of gall-size in social and solitary Australian Acacia thrips

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Insect Science 2006年第5期13卷 391-400页

作者： THOMAS WILLIAM CHAPMAN KAREN LEAH FRANCIS-GEYER michael PHILIP schwarz School of Biological Sciences Flinders University Adelaide South Australia Australia

Many species of gall-inducing Acacia thrips are attacked by kleptoparasitic thrips who enter the gall, destroy the occupants, and then use the gall for producing their own offspring. The hypothesis tested here is that pressure exerted by ldeptoparasites （genus Koptothrips） not only provoked the evolution of soldiers in the gall-inducing clade, but have also influenced the evolution of gall size and morphology. Various size dimensions of invaded galls were compared to those of uninvaded galls using data from six gall-inducing species and their kleptoparasites. For the non-social gall-inducing species （K. ellobus and K. nicholsoni） invaded galls showed no significant size differences from galls that had not been invaded. For the four social gall-inducingspecies （K. habrus, K. intermedius, K. waterhousei and K. morrisi） invaded galls were significantly narrower and/or shorter than uninvaded galls. Galls of social species that had not been invaded and contained adult soldiers were significantly larger than galls where soldiers were still at a larval stage, suggesting that gall size is related to gall age in these species. An hypothesis is proposed that links the timing of invasion by kleptoparasites to size of the host gall： induction of a smaller gall by host founders will reduce the period of vulnerability to invasion （before soldiers become adults） for social thrips by allowing foundresses in these smaller galls to begin laying soldierdestined eggs relatively sooner.

关键词： evolution of gall-size Kladothrips Koptothrips principal components analysis soldiers social behavior

Recent introduction of an allodapine bee into Fiji： A new model system for understanding biological invasions by pollinators

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Insect Science 2015年第4期22卷 532-540页

作者： Scott V. C. Groom Marika V. Tuiwawa Mark I. Stevens michael P. schwarz School of Biological Sciences Flinders University of South Australia GPO Box 2100 SA 5001 Adelaide Australia South Pacific Regional Herbarium University of the South Pacific Suva Fiji South Australian Museum GPO Box 234 SA 5000 School of Pharmacy and Medical Sciences University of South Australia Adelaide South Australia Australia

Morphology-based studies have suggested a very depauperate bee fauna for islands in the South West Pacific, and recent genetic studies since have indicated an even smaller endemic fauna with many bee species in this region resulting from human-aided dispersal. These introduced species have the potential to both disrupt native pollinator suites as well as augment crop pollination, but for most species the timings of introduction are unknown. We examined the distribution and nesting biology of the long-tongued bee Braunsapis puangensis that was first recorded from Fiji in 2007. This bee has now become widespread in Fiji and both its local abundance and geographical range are likely to increase dramatically. The impacts of this invasion are potentially enormous for agriculture and native ecosystems, but they also provide opportunities for understanding how social insect species adapt to new environments. We outline the major issues associated with this recent invasion and argue that a long-term monitoring study is needed.

关键词： Allodapini exotic species Fiji long distance dispersal pollinatorcompetition

Prospective cohort study on facial profile changes in infants with Robin sequence and healthy controls

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Pediatrics 2024年第6期20卷 581-589页

作者： Cornelia Wiechers Julian Sowula Karen Kreutzer Christoph E.schwarz Christina Weismann michael Krimmel Christian F.Poets Bernd Koos Department of Neonatology Tuebingen University HospitalCalwerstrasse 772076 TuebingenGermany Center for Cleft Lip Palate and Craniofacial MalformationsTuebingen University HospitalTuebingenGermany Department of Orthodontics Tuebingen University HospitalTuebingenGermany Department of Oral and Maxillofacial Surgery Tuebingen University HospitalTuebingenGermany

Background Various conservative and surgical approaches exist to treat Robin sequence(RS),but their effects on facial profile and mandibular catch-up growth are unclear.A functional treatment concept,used in our centre for 25 years,includes an individualized palatal plate with a velo-pharyngeal extension and intensive feeding *** We performed a prospective study to objectively describe facial profiles in infants with RS treated with the above *** with isolated RS were admitted to our tertiary perinatal and national referral centre for craniofacial malformations between May 2018 and Nov *** with RS received 3D-photographs during clinically indicated *** controls were recruited from Dec 2018 to Sep 2019 and received 3D-photographs every 3 *** digitally measured jaw index(JI),defined as alveolar overjet(O)x maxillary arch(U)/mandibular arch(L),and the soft tissue reference points A’-point,Nasion’,B’-point angle(ANB’),describing the relative position of maxilla to mandible,were *** mixed models were used to examine time trajectories in JI and ANB’.Results A total of 2073D images,obtained in 19 infants with RS and 32 controls,were *** and ANB’decreased over time in both groups[for JI−0.18(95%CI−0.25 to−0.10);for ANB’:−0.40°per month[(95%CI−0.48 to−0.32)]]but remained lower in controls[for JI−2.5(95%CI−3.2 to−1.8);for ANB’-1.7°(95%CI−2.4 to−1.0)].Also,the ANB’model showed a significant effect of the interaction term diagnosis x *** Based on longitudinal 3D images,we describe changes in objective parameters of facial profile in infants with and without RS during the first year of *** findings indicate catch-up growth in infants treated for RS.

关键词： Infant Mandibular catch-up growth Pre-epiglottic Baton Plate Robin sequence Three-dimensional photography

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cover story

Acta Pharmaceutica Sinica B 2020年第1期10卷 10-10页

作者： Joanne Wang michael schwarz 不详

Front Targeted delivery of imaging or therapeutic agents into cancer cells represents a major strategy in contemporary oncology drug discover and *** several different approaches can be used,one strategy to selectively and non-invasively deliver small molecule imaging or therapeutic agents into cancer cells is to take advantage of solute carrier(SLC)uptake transporters selectively expressed in cancer cells.

关键词： agent Cover story Front Targeted delivery

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

可靠的咖啡鉴别

实验与分析 2008年第4期 34-35页

作者： michael schwarz 德国Phytolab公司

判断一种咖啡末是昂贵的Arabica咖啡还是价格低廉的Robusta咖啡，仅从咖啡末的外观是没办法鉴别的，一个可行的鉴别方法是分析其中的标志物16-O-甲基咖啡醇，这一方法还可以鉴别出微量的Robusta咖啡。

关键词：咖啡鉴别标志物

CD5:from antiquated T cell marker to immunotherapy’s new hope

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2023年第6期8卷 2442-2444页

作者： Sandra schwarz michael Linnebacher Molecular Oncology and Immunotherapy Clinic of General SurgeryRostock University Medical Center18057RostockGermany

In a recent study published in Science,He et *** the role of CD5 on dendritic cells(DCs)in priming effector T cells.^(1)By proving the importance of CD5 in engaging effective antitumor immune responses,they highlighte... 详细信息

关键词： immunotherapy al. CD5

Effective transport width——A methodology to describe the spatial variability of bedload transport

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Sediment Research 2023年第2期38卷 294-301页

作者： Rolf Rindler Sabrina schwarz Marcel Liedermann Dorian Shire-Peterlechner Andrea Kreisler Johann Aigner michael Tritthart Helmut Habersack Institute of Hydraulic Engineering and River Research Department of Water Atmosphere and Environment University of Natural Resources and Life Sciences

The monitoring of bedload transport processes in rivers is a still challenging task in research and the parameter effective transport width(ETW) allows, for the first time, a process description of the local variability of the bedload transport. In this paper, the distribution of bedload transport over a river crosssection was studied by statistically analyzing long-term monitoring data. Using an innovative integrated measurement system, combining geophones distributed over the river width with bedload traps and basket sampling, allows for continuous, high-resolution, long-term monitoring data of bedload transport characteristics to be generated. Geophone data can be used to record and describe bedload transport processes such as intensity, temporal variability, and local variability. One parameter observed was the ETW, which describes the width where bedload transport is taking place for different discharge classes in gravel bed rivers. With the help of a data series recorded over more than a decade, it is now possible, for the first time, to statistically describe the continuously and directly measured ETW. Hence, it became evident that the effective bedload transport width depends on the discharge rate and local transport capacity, and that bedload transport over the entire river width only occurs at high flows that prevail a few days a year.

关键词： Bedload transport Spatial distribution Effective transport width Plate geophones