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Buzz-pollination in Neotropical bees:genus-dependent frequencies and lack of optimal frequency for pollen release

Insect Science 2020年第1期27卷 133-142页

作者： Conrado Augusto Rosi-Denadai Priscila Cassia Souza Araujo Lucio Antonio de Oliveira Campos Lirio Cosme Jr. Raul Narciso carvalho Guedes Departamento de Entomologia Universidade Federal de VigosaVigosaMinas GeraisBrazil Departamento de Biologia Geral Universidade Federal de VigosaVigosaMinas GeraisBrazil

Over 50 genera of bees release pollen from flower anthers using thoracic vibrations,a phenomenon known as *** efficiency of this process is directly affected by the mechanical properties of the buzzes,namely the duration,amplitude,and ***,although the effects of the former two properties are well described,the role of buzz frequency on pollen release remains ***,nearly all of the existing studies describing vibrational properties of natural buzz-pollination are limited to bumblebees(Bombus)and carpenter bees(Xvlocopa)constraining our current understanding of this behavior and its ***,we attempted to minimize this shortcoming by testing whether flower anthers exhibit optimal frequency for pollen release and whether bees tune their buzzes to match these(optimal)*** true,certain frequencies will trigger more pollen release and lighter bees will reach buzz frequencies closer to this optimum to compensate their smaller buzz *** strategies were used to test these hypotheses:(i)the use of(artificial)vibrational playbacks in a broad range of buzz frequencies and amplitudes to assess pollen release by tomato plants(Solarium Ivcopersicum L.)and(ii)the recording of natural buzzes of Neotropical bees visiting tomato plants during *** playback experiment indicates that although buzz frequency does affect pollen release,no optimal frequency exists for *** addition,the recorded results of natural buzz-pollination reveal that buzz frequencies vary with bee genera and are not correlated with body ***,neither bees nor plants are tuned to optimal pollen release *** frequency of buzz-pollination is a likely consequence of the insect flight machinery adapted to reach higher accelerations,while flower plant response to buzz-pollination is the likely result of its pollen granular properties.

关键词： buzz amplitude buzz frequency floral sonication pollination stingless bees vibration

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Distal renal tubular acidosis:genetic causes and management

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World Journal of Pediatrics 2019年第5期15卷 422-431页

作者： Sílvia Bouissou Morais Soares Luiz Alberto Wanderley de Menezes Silva Flávia Cristina de carvalho Mrad Ana Cristina Simoes e Silva Interdisciplinary Laboratory of Medical Investigation Faculty of MedicineFederal University of Minas Gerais(UFMG)Av.Prof.Alfredo Balena190Room#281Belo HorizonteMG 30130-100Brazil Pediatric Nephrology Unit Faculty of MedicineUFMGBelo HorizonteBrazil

Background Distal renal tubular acidosis(dRTA)is a kidney tubulopathy that causes a state of normal anion gap metabolic acidosis due to impairment of urine *** review aims to summarize the etiology,pathophysiology,clinical findings,diagnosis and therapeutic approach of dRTA,with emphasis on genetic causes of *** sources Literature reviews and original research articles from databases,including PubMed and Google *** searching was performed to identify additional studies about *** dRTA is characterized as the dysfunction of the distal urinary acidification,leading to metabolic *** pediatric patients,the most frequent etiology of dRTA is the genetic alteration of genes responsible for the codification of distal tubule channels,whereas,in adult patients,dRTA is more commonly secondary to autoimmune diseases,use of medications and *** with dRTA exhibit failure to thrive and important laboratory alterations,which are used to define the *** oral alkali and potassium supplementation can correct the biochemical defects,improve clinical manifestations and avoid nephrolithiasis and *** dRTA is a multifactorial disease leading to several clinical *** and laboratory alterations can be corrected by alkali replacement therapy.

关键词： Renal tubular acidosis Distal tubule physiology Metabolic acidosis Gene mutations Proton pump

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Small and Medium Enterprises （SMEs） and Competitiveness： An Empirical Study

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Management Studies 2014年第2期2卷 88-95页

作者： Luisa carvalho Teresa Costa Open University Lisbon Portugal University of Evora Evora Portugal Institute Polytechnic of Setubal Setubal Portugal

Globalisation and competitiveness affected the way of enterprises undertake innovation, particularly in the case of Small and Medium Enterprises （SMEs）. According with European Commission （2013） in Europe 99% of the enterprises is SMEs. SMEs all over the world are considered as the lifeblood of the economies. The importance of this research is justified by the predominance of SMEs that represents the majority of enterprises in Portugal. SMEs contribute to the creation of jobs, as well as to the competitiveness of the economies, specially, in crisis time. This study has two main objectives; firstly propose a literature review focused on competitiveness of SMEs. Secondly analysis a sample of 23 enterprises identified as leaders of Portuguese SMEs in 2012. The data considering a ranking list of the largest 1,000 Portuguese SMEs in 2012, published by Exame （2013）. This analysis considers some SMEs features such as, sales, market share, dimension, and sector. Additionally this research presents a SME case included in this database. Through the application of a questionnaire the study provides a complementary micro perspective of the factors that influences enterprises competitiveness. The questionnaire is divided into three parts： Part one refers to the characterization of the enterprise; Part two assesses the entrepreneurial competitiveness, considering nine questions to assess performance, six questions to assess internal processes and four questions to understand the relations with customers; and part three analyses the diffusion of innovation through three questions. Finally the study provides important clues relevant for the development of public policies that can support the innovation and competitiveness of SMEs. Moreover the discussions highlight some variables approached in literature review considered as pertinent in the case of innovative SME due to their contribution to exports and to economic growth.

关键词： competitiveness diffusion of innovation performance Small and Medium Enterprises (SMEs) Research and Development (R&D)

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Relationship between Physical Activity Level, Hepatic Steatosis Presence, Metabolic Syndrome and the Risk of Developing Type 2 Diabetes in Men

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Health 2016年第15期8卷 1778-1787页

作者： Carla Giuliano de Sá Pinto Montenegro Marcio Marega José Antonio Maluf de carvalho Luis felipe Tubagi Polito Rafael Mathias Pitta Fabio Luis Ceschini Danilo Sales Bocalini Aylton José Figueira Albert Einstein Israelita Hospital S&atilde o Paulo Brazil Sã o Judas Tadeu University S&atilde o Paulo Brazil

Cardiovascular disease, cancer, respiratory and metabolic disease represent 63% of all deaths worldwide and are considered the major causes of morbidity and mortality. Physical inactivity is considered a case of public health, and other behavioral and metabolic risk factors, according to WHO (2011), such as smoking, increased blood pressure, increased blood glucose, hypercholesterolemia, overweight and obesity. The Nonalcoholic Fatty Liver Disease (NAFLD) is the most prevalent liver disease in adults, and can progress and be characterized as hepatic steatosis (HS) which is derived from the accumulation of lipids in hepatocytes, and histopathologic condition is more than 5% of the weight of liver. So, the purpose of this study is to identify the relationship between the physical activity level and the hepatic steatosis presence, metabolic syndrome and the risk of developing type 2 diabetes mellitus in men. We evaluated retrospectively medical records of 1399 men (40.7 ± 8.18 years old) who participated in the protocol of Preventive Health Check-up at Hospital Israelita Albert Einstein from January to October 2011. According to the results, it is concluded that there is a positive association between low physical activity level and the presence of Hepatic steatosis. The results further demonstrate that, despite the high BMI, blood levels of the subjects remained unchanged. Even without a positive association between these variables, the results showed a high risk behavior for the development of diabetes mellitus type 2.

关键词： Physical Activity Hepatic Steatosis Metabolic Syndrome Type 2 Diabetes

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Chinese Teachings

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Beijing Review 2022年第22期65卷 26-28页

作者： Evandro Menezes de carvalho FGV Law School in Rio de Janeiro Faculty of Law at Fluminense Federal University

Since the end of the Cold War,the world has embraced the idea of globalization with the promise of a free circulation of goods and people across *** emergence of the Internet as we know it and the creation of the World Trade Organization (WTO) in the 1990s were driving forces of this ideology and,above all,of the liberal economic order.

关键词： driving Trade WTO

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Entering a New Time

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北京周报：英文版 2023年第17期66卷 24-25页

作者： Evandro Menezes de carvalho the Center for Brazil-China Studies at FGV Law School in Rio de Janeiro

After four years of Brazil on the sidelines of the world and, therefore, of history, the reelection of Luiz Inácio Lula da Silva as president in October 2022 has reintroduced the country into the global scene with th... 详细信息

关键词： Brazil scene peculiar

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A New Legal Era

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Beijing Review 2022年第11期65卷 26-27页

作者： Evandro Menezes de carvalho FGV Law School in Rio de Janeiro the Faculty of Law at Fluminense Federal University

The Fifth Session of the 13th National People’s Congress (NPC) and the Fifth Session of the 13th National Committee of the Chinese People’s Political Consultative Conference took place at a time of increased uncertainty regarding the future of the international *** the 2008 financial crisis,which had the *** its epicenter,China has been preparing for more challenging scenarios at the global and domestic levels.

关键词： preparing financial Legal

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The CPC Celebrates Its Centenary in Readiness for the Future

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China Today 2021年第7期70卷 33-35页

作者： EVANDRO MENEZES DE carvalho Brazil-China Studies Center at Fundacao Getulio Vargas Law School in Rio de Janeiro

CHINA’S socio-economic achievements are indivisible from the wise leadership of the Communist Party of China(CPC),which on July 1,2021 celebrates the 100th anniversary of its ***,any discussion of China’s achievements—its economic feats,eradication of extreme poverty,technological advances,modern infrastructure,and progressive development of an ecological society,among others—inevitably leads to the cognizance of the integral role of the country’s governance model in all of them.

关键词： founding extreme Communist

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China’s Diplomacy Promotes a Human Community with a Shared Future

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China Today 2021年第5期70卷 40-42页

作者： EVANDRO MENEZES DE carvalho the Brazilian edition of China Today the Brazil-China Studies Center at Fundacao Getulio Vargas Law School in Rio de Janeiro

THIS year China celebrates the centenary anniversary of the founding of the Communist Party of China(CPC).Leading up to the commemoration,many international analysts have already started to debate China’s new foreign policy and its impact on the international *** debate has two motivating *** first and most important is the prediction that the Chinese economy will surpass the American economy before *** other factor is the role of Chinese diplomacy in combating the pandemic,through which China has helped more than 100 countries in COVID-19 prevention,control,and vaccination,in contrast to the U.S.’lackluster responses to the *** is not a discussion about the world’s leadership profiles but a global governance model for the future.

关键词： founding prevention policy

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Summit Priorities

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北京周报:英文版 2023年第33期66卷 22-24页

作者： Evandro Menezes de carvalho Center for Brazil-China Studies at FGV Law School in Rio de Janeiro

Among the topics on the table for the upcoming BRICS Summit in South Africa in late August,we could highlight the prominent topics related to the use of national currencies for intra-BRICS(Brazil,Russia,India,China and South Africa) trade relations and the expansion of the ***,a third topic deserves greater attention:cooperation in digital infrastructure for developing digital economies and governance.

关键词： Africa Summit Brazil

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