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Journal of Environmental Sciences 2023年第6期128卷 161-170页

作者： Justin Rorar laura Davila Garcia Teresa Cutright Department of Civil Engineering The University of AkronOH 44325-3905USA

Cyanobacteria can produce cyanotoxins such as microcystin-LR(MC),saxitoxin(STX),and anatoxin-a(ANTX-a)which are harmful to humans and other *** removal efficiencies of STX and ANTX-a by powdered activated carbon(PAC)was investigated,aswell as when MC-LR and cyanobacteriawere *** conductedwith distilled water and then source water,using the PAC dosages,rapid mix/flocculation mixing intensities and contact times of two drinking water treatment plants in northeast *** pH 8 and 9,STX removal was 47%-81%in distilled water and 46%-79%in source water,whereas it was 0-28%for pH 6 in distilled water and 31%-52%in source *** 1.6μg/L or 20μg/L MC-LR was present with STX,STX removal was increased with PAC simultaneously removing 45%-65%of the 1.6μg/L MC-LR and 25%-95%of the 20μg/L MC-LR depending on the ***-a removal at pH 6 was 29%-37%for distilled water and 80%for source water,whereas it was 10%-26%for pH 8 in distilled water and 28%for pH 9 in source *** presence of cyanobacteria cells decreased ANTX-a removal by at least 18%.When 20μg/L MC-LR was present with ANTX-a in source water,59%-73%ANTX-a and 48%-77%of MCLR was removed at pH 9 depending on the PAC *** general,a higher PAC dose led to higher cyanotoxin *** study also documented that multiple cyanotoxins can be effectively removed by PAC for water at pH’s between 6 and 9.

关键词： pH Cyanotoxins Cyanobacteria PAC Microcystin Saxitoxin Anatoxin-a

What good is the reserve? A translational perspective for the managing of cognitive decline

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Neural Regeneration Research 2019年第7期14卷 1219-1220页

作者： laura Serra Francesca Gelfo Neuroimaging Laboratory IRCCS Fondazione Santa Lucia Department of Clinical and Behavioural Neurology IRCCS Fondazione Santa Lucia Department of Human Sciences Guglielmo Marconi University

The concept of reserve appears in the neurological literature in the 1940s arising from the observation that there is no linear relationship between neurological damage and severity of the clinical ***,this concept sustains that the experiences pursued during life-span enrich the brain by making it more resilient to neuronal ***,in the last three decades the reserve concept has become very popular in the scientific field,mainly associated with the pathophysiological mechanisms underlying the Alzheimer’s Disease(AD)(Serra et al.,2018;Stern et al.,2018).

关键词： reserve appears neurological literature reserve concept

Necrotizing Pneumonia and Conservative Treatment: A Case Report and Review of the Literature

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Open Journal of Respiratory Diseases 2024年第3期14卷 69-76页

作者： Pedro Rogerio Magalhães Braga Eduarda Kipper Beck Carolina de Mello Viera Cecília Gatti Wolff laura Gazal Passos Guilherme Bastos de Mello Luis Felipe Pilar Gomes Giacomo Farias Tramontin Taíse Rosa de Carvalho Department of Internal Medicine Hospital So Lucas da PUCRS Porto Alegre Brazil School of Medicine Pontifcia Universidade Catlica do Rio Grande do Sul Porto Alegre Brazil Department of Radiology Hospital So Lucas da PUCRS Porto Alegre Brazil

We present a case of necrotizing pneumonia in an 87-year-old man without severe respiratory instability. Clinical suspicion arose due to the need for supplementary oxygen and persistent fever during treatment for community-acquired pneumonia. The diagnosis was confirmed by chest computed tomography. Although necrotizing pneumonia typically requires major surgical intervention upon diagnosis, we chose conservative management with antimicrobials and chest drainage alone. The patient experienced significant improvement and resolution of pneumonia with conservative management.

关键词： Respiratory Tract Infections Lung Disease Bacterial Pneumonia

Progesterone for the treatment of central nervous system disorders: the many signaling roads for a single molecule

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Neural Regeneration Research 2020年第10期15卷 1846-1847页

作者： Susana laura González Universidad de Buenos Aires Facultad de Medicina Departamento de Bioquímica Humana Buenos Aires Laboratorio de Nocicepción y Dolor Neuropático Instituto de Biología y Medicina Experimental

Central nervous system(CNS)injuries and neurodegenerative diseases show a broad spectrum of common pathophysiological processes,including oxidative stress,neuroinflammation,excitotoxicity,demyelination and neurotransmission *** the past decades,valuable experimental investigations have helped to clarify the role and timing of these multiple molecular and cellular mechanisms in each of these particular disorders,which usually overlap and critically contribute to long-term ***,up to now,no definite cures or effective disease-modifying therapies are available for any of these *** has led to an active search of novel therapeutic approaches,including the repositioning of existing drugs for new indications,as a valid approach to promptly move candidate molecules to clinical trials.

关键词： injuries disorders drugs

Probabilistic transitions for P systems

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Progress in Natural Science:Materials International 2007年第4期17卷 432-441页

作者： Gabriel Ciobanu laura Cornǎcel "A. I. Cuza" University Faculty of Computer ScienceBlvd. Carol I No. 11700506 IasiRomania Romanian Academy Institute of Computer ScienceBlvd. Carol I No.8700505 IasiRomania

In this paper we use the abstract syntax and the structural operational semantics of the P systems given in [ 1 ], and add probabilities to the rules and to the communication targets. We take into account the number of possible combinations of rules which can be applied in a computation step, as well as the consumption degree of the current resources.

关键词： probabilistic transition P systems.

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百变干细胞

环球科学 2024年第10期 52-55页

作者：劳拉·沃克戴黛(译) 不详

干细胞是我们身体中所有细胞的“母细胞”,是构建人体的基石。不管是脚底的皮肤细胞,还是眼睛中的感光细胞,干细胞可以分化为身体内任何类型的细胞。早在1902年,就有一些科学家提出人体中存在着干细胞,但是直到1978年,科学家才在脐带血... 详细信息

干细胞是我们身体中所有细胞的“母细胞”,是构建人体的基石。不管是脚底的皮肤细胞,还是眼睛中的感光细胞,干细胞可以分化为身体内任何类型的细胞。早在1902年,就有一些科学家提出人体中存在着干细胞,但是直到1978年,科学家才在脐带血中发现了干细胞。自此,干细胞迅速成为了科学界和媒体关注的焦点。由于干细胞能够被引导分化为任何类型的细胞,取代那些受损或死亡的细胞,人们纷纷猜测干细胞也许能够帮人类治疗类似阿尔茨海默病之类的疑难杂症,也许还能培育出各种完整的新器官。

关键词：阿尔茨海默病干细胞感光细胞皮肤细胞疑难杂症脐带血母细胞媒体关注

Green neighbourhoods in low voltage networks:measuring impact of electric vehicles and photovoltaics on load profiles

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Journal of Modern Power Systems and Clean Energy 2017年第1期5卷 105-116页

作者： laura HATTAM Danica Vukadinovic GREETHAM Department of Mathematics and Statistics University of ReadingReading RG66AXUK

In the near future, various types of low-carbon technologies(LCTs) are expected to be widely employed throughout the United Kingdom. However, the effect that these technologies will have at a household level on the existing low voltage(LV) network is still an area of extensive research. We propose an agent based model that estimates the growth of LCTs within local neighbourhoods,where social influence is imposed. Real-life data from an LV network is used that comprises of many socially diverse neighbourhoods. Both electric vehicle uptake and the combined scenario of electric vehicle and photovoltaic adoption are investigated with this data. A probabilistic approach is outlined, which determines lower and upper bounds for the model response at every *** technique is used to assess the implications of modifying model assumptions and introducing new model features. Moreover, we discuss how the calculation of these bounds can inform future network planning decisions.

关键词： Agent based modelling Low voltage networks Electric vehicles Photovoltaics

Debate about TGFBR1 and the susceptibility to colorectal cancer

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World Journal of Gastrointestinal Oncology 2012年第1期4卷 1-8页

作者： laura Valle Hereditary Cancer Program Catalan Institute of Oncology IDIBELL 08908 Hospitalet de Llobregat Spain

Recent years have witnessed enormous progress in our understanding of the genetic predisposition to colorectal cancer (CRC). Estimates suggest that all or most genetic susceptibility mechanisms proposed so far, ranging from high-penetrance genes to low-risk alleles, account for about 60% of the population-attributable fraction of CRC predisposition. In this context, there is increasing interest in the gene encoding the transforming growth factor β receptor 1 (TGFBR1 ); first when over a decade ago a common polymorphism in exon 1 (rs11466445, TGFBR1 *6A/9A) was suggested to be a risk allele for CRC, then when linkage studies identified the chromosomal region where the gene is located as susceptibility locus for familial CRC, and more recently when the allele-specific expression (ASE) of the gene was proposed as a risk factor for CRC. Published data on the association of TGFBR1 with CRC, regarding polymorphisms and ASE and including sporadic and familial forms of the disease, are often contradictory. This review gives a general overview of the most relevant studies in order to clarify the role of TGFBR1 in the field of CRC genetic susceptibility.

关键词： Transforming growth factor β receptor 1 Transforming growth factor β receptor 1*6A 9q linkage peak Allele-specific expression Colorectal cancer risk

Impact of lactic acid bacteria on the control of Listeria monocytogenes in ready-to-eat foods

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Food Quality and Safety 2022年第3期6卷 375-385页

作者： laura Webb Luyao Ma Xiaonan Lu Department of Food Science and Agricultural Chemistry Faculty of Agricultural and Environmental SciencesMcGill UniversitySainte-Anne de-BellevueQcCanada

Due to the increased demand for ready-to-eat(RTE)minimally processed foods,alternatives to chemical and thermal preservation methods to maintain food safety are highly demanded.A significant safety hazard in RTE food products is the growth of the foodborne pathogen Listeria monocytogenes(***).After processing,recontamination or cross-contamination of *** in RTE food products may occur and the lack of cooking can lead to an increased risk of ***,some RTE food products(*** and cured meat)can have a long processing period and shelf life,thus allowing for the growth and proliferation of *** in the food *** acid bacteria(LAB)are generally recognized as safe probiotics and have been proposed as a biological control approach to eliminate foodborne pathogens including *** have been reported to extend the shelf life of food products and inhibit pathogen proliferation via growth competition and metabolite *** are native microflora of many RTE foods,but only certain LAB may inhibit pathogen ***,the specificity of LAB species should be employed in their use in RTE *** review will discuss the antimicrobial mechanisms of LAB against ***,selective use of LAB in food matrices,and their uses in food processing and packaging.

关键词： Ready-to-eat food products lactic acid bacteria Listeria monocytogenes food safety

Tree species richness enhances stand productivity while stand structure can have opposite effects, based on forest inventory data from Germany and the United States of America

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Forest Ecosystems 2018年第1期5卷 36-52页

作者： laura Zeller Jingjing Liang Hans Pretzsch Center of Life and Food Sciences Weihenstephan Technical University of MunichHans-Carl-von-Carlowitz-Platz 285354 FreisingGermany Division of Forestry and Natural Resources Davis College of AgricultureNatural Resources&DesignWest Virginia University340 Percival HallMorgantownWV 26506-6108USA

Background： in recent studies, mixed forests were found to be more productive than monocultures with everything else remaining the same. Methods： To find out if this productivity is caused by tree species richness, by a more heterogeneous stand structure or both, we analyzed the effects of forest structure and tree species richness on stand productivity, based on inventory data of temperate forests in the United States of America and Germany. Results： Having accounted for effects such as tree size and stand density, we found that：（I） tree species richness increased stand productivity in both countries while the effect of tree size heterogeneity on productivity was negative in Germany but positive in the USA; （11） productivity was highest at sites with an intermediate amount of precipitation; and （111） growth limitations due water scarcity or low temperature may enhance structural heterogeneity. Conclusions： In the context of forest ecosystem goods and services, as well as future sustainable forest resource management, the associated implications would be：

关键词： Big data Overyielding Tree size heterogeneity Tree species mixing Climate Biodiversity-productivityrelationship