bluuebunny/crossref_metadata_2025 huggingface dataset:
REGENERACIÓN DE AGAVE MEZCALERO (Agave angustifolia HAW.) A PARTIR DE EMBRIONES SOMÁTICOS ENCAPSULADOS
Authors: Arzate-Fernández Amaury M. , Piña-Escutia José L. , Norman-Mondragón Tomás H. , Reyes-Díaz Jesús I. , Guevara-Suárez Karen L. , Vázquez-García Luis M.
Published: April 2020

Como una estrategia de propagación y conservación, se obtuvieron embriones somáticos (ES) de Agave angustifolia Haw. a partir de ejes embrionarios cigóticos (EEC), cultivados en el medio de Murashige y Skoog (MS) a 25 % de su concentración, suplementado con vitaminas L2, 13.57 μmol de ácido 2,4-diclorofenoxiacético (2,4-D), 4.4 μmol de 6-bencilaminopurina (BAP) y 60 g L-1 de sacarosa. Para producir semillas sintéticas (SS), cada ES fue encapsulado en una matriz de alginato de sodio en complejo con cloruro de calcio. Se evaluaron tres concentraciones (3, 4 y 5 %) de la matriz de alginato de sodio (MAS) durante 15 y 30 min como tiempo de inmersión (TI) en cloruro de calcio, así como la concentración de las sales del medio MS (50 y 100 %) como endospermo sintético, enriquecido con 6-bencilaminopurina (BAP) (0.0, 4.4 y 8.8 μmol). También se evaluó el efecto de las tres concentraciones de la MAS en el porcentaje de germinación y de sobrevivencia de las SS. La germinación de las SS y sobrevivencia de las plántulas, 100 % en ambos casos, se observó en los ES encapsulados con 3 % de la MAS disuelta en medio MS a 100 % y suplementado con 4.4 μmol de BAP, con 15 o 30 min de TI en cloruro de calcio.
GENÉTICA DE LA RESISTENCIA A LA ROYA DEL TALLO EN GENOTIPOS DE TRIGO CRISTALINO
Authors: Bárcenas-Santana Daniel , Huerta-Espino Julio , Sandoval-Islas J. Sergio , Villaseñor-Mir Héctor E. , Leyva-Mir Santos G. , Mariscal-Amaro Luis A. , Michel-Aceves Alejandro
Published: April 2020

Se determinó la genética de la resistencia en cuatro genotipos de trigo cristalino (Triticum durum L.) liberados para su siembra en el noroeste de México. Los genotipos Atil C2000, Samayoa C2004, Cirno C2008 y Movas C2009 son resistentes a la raza RTR de la roya del tallo causada por Puccinia graminis f. sp. tritici; sin embargo, se desconoce el número de genes que les confieren la resistencia. La determinación de la genética de su resistencia fue mediante el análisis de progenies derivadas de las cruzas con la variedad susceptible Noio. La segregación en las generaciones F3 de la progenie Atil C2000 y Cirno C2008, mostró una relación fenotípica de 57:7; la cual se ajustó a tres genes dominantes, dos de los cuales fueron complementarios y uno independiente. Para la cruza Samayoa C2004 × Noio la relación fenotípica en la generación F3 fue de 1:2:1 de familias resistentes, segregantes y susceptibles, lo cual indicó la presencia de un gen dominante. La progenie de la cruza de Movas C2009 × Noio segregó en la proporción fenotípica 67:176:13 de familias resistentes, segregantes y susceptibles, lo que indicó que este progenitor posee cuatro genes dominantes complementarios. La ausencia de familias susceptibles entre las cruzas de las variedades resistentes indicaron la existencia de al menos un gen de resistencia en común.
FAMÍLIA “MARROM” BRASILEIRA: NOTAS SOBRE SUAS FACETAS MESTIÇAS
Authors: Souza Antonio José de
Published: April 2020

O presente ensaio propõe, a partir do pensamento despretensioso, trazerelucubrações oriundas das leituras feitas no âmbito do Programa de Pós-Graduação em Famíliana Sociedade Contemporânea (PPGFSC/UCSal), bem como dos estudos sobre a categoria famíliae suas facetas híbridas e mestiças. Portanto, trata-se mais de um exercício epistêmico em simesmo do que a promissão em oferecer respostas contundentes.
Habitat Utilization of Field Rats in Crop Fields and Adjacent Natural Vegetation in District Rawalpindi
Authors: Mosvi Ali Hasnain , Haider Jibran , Naseer Amir , Ibrahim Abdullah
Published: April 2020

Current study was designed to assess habitat utilization of field rats in crop fields and adjacent natural vegetation in District Rawalpindi. The rodents are widely distributed and a serious agricultural pest in Pakistan. Relative abundance of rodent populations changes seasonally under field conditions. The field trials were conducted in district Rawalpindi of the Pothwar area, Pakistan. Wild vegetation plays an important role for providing shelter/cover to the rodent during non-crop season. The dominant wild vegetation recorded from field boundaries were: Cynodon dactylon, Achyranthes aspera, Aerva javanica Saccharum griffithii, Dactyloctenium aegyptium, Dichanthium annulatum, Desmostachya bipinnata, Imperata cylindrical, Ziziphus nummularia, Sorghum halepense and Capparis deciduas. This vegetation provides shelter and food to rodents when there is no cultivation or at an early stage of crop growth.
Evaluating the Effectiveness of Japan’s Climate Change Mitigation and Clean Technology Development Policies
Authors: Ihara I , Zhao R , Pandyaswargo A H , Onoda H
Published: April 2020

The energy sector has been the highest contributor of green-house gases (GHG) emission in Japan. To reduce GHG emissions, the development and applications of cleaner technologies sup-ported by effective policies are required. In this study, the effec-tiveness of Japanese government policies related to climate change mitigation especially in the technology development sec-tor was analyzed. To do so, two methodologies; 1) results-based approach (RBA) and 2) case-based approach (CBA) will be com-bined to test the effectiveness of government policies. This com-bination was conducted to fill the missing data required to con-duct the two methodologies. The merging of the two methodolo-gies produced indexes where the proximity of the performance of each policy measured to it would determine its effectiveness. In order to verify the results, the number of projects related to the policy took place over the years was also observed. The results show that the most effective policies were related to the follow-ing technologies: 1) Energy management, 2) Biomass energy pro-duction, and 3) Electric power storage.
Narcotization as a Social Problem and the Factor of Destruction of Youth Society (on the Results of Annual Monitoring of Drug Situation in the Krasnoyarsk Region)
Authors: Shinkevich V. E. , Kalinichenko Ya. N.
Published: April 2020

The article considers the problem of drug addiction and the drug situation in the youth environment by the example of the Krasnoyarsk Territory as a typical Siberian territorial subject of the Russian Federation. The authors draw attention to the harmful influence of drug use on the health of the nation, on its most active part – young people, on impairment of work productivity of the population, criminalization of the society as a result of the illegal distribution of narcotic drugs and psychotropic substances. The importance of annual monitoring of the drug situation in order to timely identify emerging changes in drug addiction in the society and to develop effective measures to improve the drug situation is also shown.
Actual Problems of Public Service in the Russian Federation
Authors: Gnevko A. V. , Zernov A. O. , Voskresenskaya E. V.
Published: April 2020

The article argues that the entry of the Russian Federation among the five largest economies in the world is accompanied by a fight against corruption. As shown by the research conducted by the authors of the experience of using tools and methods to counteract corruption, the most effective mechanisms for preventing and combating corruption, which implements the principle of publicity and openness of public servants, is the Institute of conflict of interest management. Thus, the problem of conflict of interests in the system of public service in Russia is constantly growing. One of the problems raised in the article related to the organization of the functioning of the public service in the Russian Federation is the incorrectness of the concepts of «conflict of interest» and « personal interest», which requires changes in the legislation.
Constitutional and Legal Sources Regulating the Protection of Human and Civil Rights and Freedoms in the Field of Migration in the EAEU
Authors: Polunina A. V.
Published: April 2020

The article covers issues of protection of constitutional rights and freedoms of a person and citizen in the field of migration in the Eurasian economic Union. Special attention is paid to legal acts on the protection of human and citizen rights in the field of migration of the CIS and EАEU member States, as well as legal mechanisms for protecting the rights of migrants. Offers modern solutions to the problems of protecting the rights of migrants in the context of population growth in the process of globalization.
Band-stop filter design based on split ring resonators loaded on the microstrip transmission line for GSM-900 and 2.4 GHz ISM band
Authors: ÇINAR Alparslan , BİÇER Sinan
Published: April 2020

Split-ring resonator is a popular research topic in literature. As known, it may be used in the design of electromagnetic metamaterials. Additionally, these structures can be preferred in microwave filter devices. In this study, a band-stop filter was designed for GSM-900 and 2.4 GHz ISM band by using split-ring resonators. Two split-ring arrays (sizes of one of these arrays were larger than the other) were loaded on the transmission line and each array consisted of four identical rings. Thus, a dual-band pass filter was obtained and this filter covered the frequency of 0.91 (GSM) and 2.43 (ISM) GHz. Then, this proposed design was fabricated and measured. According to the measurement results, the fabricated structure operated at 0.93 GHz and 2.47. The experimental results were consistent with the simulation results. As a result, thanks to the proposed structure, two frequencies can be stopped at the same time. There is no need to design a different filter structure for each frequency.
肝脏增强 CT 与肝脏 MRI 在诊断肝癌中的作用对比
Authors: 罗 瑞华 , 赵 荣娟 , 于 联芳
Published: April 2020

为了比较肝脏增强 CT 与肝脏 MRI 在诊断肝癌中的作用，以本院为单位，于 2018年 3 月—2019 年 3 月期间选取原发性肝癌患者 50 例，分析其 MRI、CT 影像学表现，就肝癌检出率进行对比。结果显示，MRI 平扫 T1 多为低信号，而 T2 多为高信号；肝内病灶及肝内病灶阳性 MRI 较增强 CT，显著偏优（P＜0.05）。MRI 诊断准确率相比 CT，显著偏高（P＜0.05）。针对直径臆3cm 肿瘤，MRI 诊断准确率较 CT 偏高（P＜0.05），而针对直径大于 3cm 肿瘤，二者比较，无显著差异（P＞0.05）。由此得出，采用增强 CT、MRI 诊断原发性肝癌，其表现具有一定特征性，但 MRI 诊断准确率高于增强 CT，特别是直径臆3cm 的肿瘤，临床价值突出。
克霉唑阴道膨胀栓治疗妊娠期合并霉菌性阴道炎的多中心、随机对照的开放性临床研究
Authors: 胡 智敏 , 廖 瑶 , 蒋 思思 , 周 成炎
Published: April 2020

论文通过多中心、随机、开放性、平行对照的临床研究，进一步评价克霉唑阴道膨胀栓与其他抗真菌药物治疗妊娠期合并霉菌性阴道炎的临床疗效与安全性差异。入选 4 个中心，1200 例经细菌性学检查确定为妊娠期合并霉菌性阴道炎患者，随机数字表分为组A300 例克霉唑阴道膨胀栓（1 粒 / 次），组 B 克霉唑阴道片（1 片 / 次）、组 C 硝酸咪康唑（1粒 /次）、组 D 制霉素栓组（1 粒 / 次），每组治疗 7 天，评估转阴率等指标。结果显示，组 A、B、C、D转阴率分别为 95.0%，94.33%，85.33%，88.0%，4 组比较差异具有统计学意义（P
骨肉瘤 X 线与 CT 和 MRI 影像特点及诊断价值
Authors: 万 章玉
Published: April 2020

本文采用回顾性分析的方法，对骨肉瘤 X 线、CT、MRI 的影像特点和诊断价值进行研究。研究对象为我院于 2019 年 1 月—6 月收治的 30 例骨肉瘤患者，并在患者及其家属的知情条件下，采用上述 3 种影像学检查方法进行检查，并对其临床诊断准确率进行统计和对比分析。结果显示，X 线、CT 和 MRI 在检查骨肉瘤的准确率分别为 83.3%、86.7%、93.3%，且差异不具备统计学意义（P>0.05）。而在诊断骨肉瘤征象方面，MRI 在诊断骨质破坏、软组织肿块方面的准确率分别为 100%和 96.7%，高于 X 线和 CT 的诊断准确率，且差异较为显著，具有统计学意义（P>0.05）。CT 诊断瘤骨的准确率显著高于 X 线和 MRI 的诊断准确率，且差异均具备统计学意义（P
痔疮手术治疗中疼痛护理的应用体会
Authors: 王 志花
Published: April 2020

为了分析疼痛护理在痔疮手术治疗中的应用价值，选取 2018 年 2 月到 2019 年 2月入住我院并接受痔疮手术的患者，并从该时间段中抽取 70 例患者作为此次研究的观察目标，给予 70 例患者实施护理干预，根据不同的护理方法将 70 例患者平均分为对照组和观察组，分别实施常规护理干预和疼痛护理干预，根据护理评分对两组患者护理模式的应用情况进行对比，其中包括知识掌握程度、治疗依从性和护理满意度、疼痛评分。结果显示，观察组知识掌握程度、治疗依从性和护理满意分别为 88.57%、94.29%、100.00%，明显高于对照组，对比数据非常显著（P
葛根减肥作用的 meta 分析
Authors: 刘 蕤 , 华 桂丰 , 刘 昶
Published: April 2020

葛根的化学和药理活性虽然有许多研究，但对葛根的保健功能特别是减肥作用的荟萃分析还很少。论文通过构建数据模型，利用 R 和 PERL 语言对多个结局指标进行meta 分析，以葛根为研究对象，采用自动化的 meta-analysis 方法对所得到 11 项减肥功能结局指标进行 meta 分析。结果显示，在加入葛根后，与对照组相比，11 个结局指标的试验组对大鼠的影响有显著差异（P50%，表明研究的异质性差异较大，即可协助管理决策者及保健食品消费者合理利用葛根的减肥功能。
Cloud and Edge Computing for Developing Smart Factory Models using a iFogSim Wrapper: Transportation Management System (TMS) Case Study
Authors: Patel Dhairya , Mohammed Sabah
Published: April 2020

The given literature focuses on developing a Smart Factory model based on Cloud and Edge computing used to develop Transportation Management System(TMS) using a iFogSim wrapper. Cloud computing identifies data centres for users and offer computer system services on-demand, including data storage and processing power, without direct active user management. In the smart industry, several devices are connected together across the internet, where vast volumes of data are collected during the entire process of output. Thus, to handle this data smart factory based on cloud and edge computing is used. The intelligent cloud-based factory offers some facility like large scale analysis of data. Concepts like fog and edge computing play a significant role in extending data storage and network capacities in the cloud that addresses some challenges, such as over-full bandwidth and latency. The literature also focuses on the implementation of TMS using the iFogSim Simulator. The simulator provides efficient execution of TMS by showing the amount of resources used which gives an idea regarding optimum use of resources. All types of data related to TMS is obtained at cloud by using smart factory like object location, time taken and energy consumption. To implement the TMS we have created a topology which displays various devices connected to the cloud which gives necessary information regarding the ongoing transportation simulation.
Ministério Público e a proteção do patrimônio público
Authors: Diniz Cláudio
Published: April 2020

O presente ensaio, contextualizado nos índices alarmantes de corrupção que afligem a sociedade brasileira, aborda a insuficiência da atividade de controle da Administração Pública, especificamente aquela desenvolvida pelo Ministério Público. A partir dessa constatação, e com o propósito de contribuir para a melhor atuação na área de proteção ao patrimônio público, serão destacados certos aperfeiçoamentos esperados em relação ao desenho institucional do Ministério Público, posturas a serem adotadas em relação à Administração Pública e a indicação da necessidade de aprimoramento do controle mediante inovações legislativas.
Editorial
Authors: Goodbody Axel Howarth
Published: April 2020

Editorial 7.1.
Pfister's Spill? Narratives of Failure in and around Wilhelm Raabe’s 1883 Eco-novel // ¿El vertido de Pfister? Narrativas del fracaso en y en torno a la eco-novela de 1883 de Wilhelm Raabe
Authors: Kneitz Agnes
Published: April 2020

This paper explores different aspects and layers of failure in Wilhelm Raabe’s Pfister’s Mill and its cultural context, which is closely related to German discourse on the environment in the second half of the nineteenth century. Raabe sought to draw attention to and inspire solutions for a pressing environmental problem of the day by conveying perceptions of everyday sensual experience in culturally communicable form. His aim was to use the novel as a means of communication about the processes whereby “socio-natural sites” affected by industrial pollution were being transformed. The author’s ultimate inability to realize this aim, the paper argues, should be understood less as a failure of literary form than as a consequence of an inherent feature of the public discourse on political ecology of the time: the tension between popular support for progress and industrial development on the one hand and growing environmental awareness within a limited range of political action on the other. Drawing not only on literary, but also historical sources, the paper seeks to (dis)entangle the complex net of relations around a classic of German environmental literature. Resumen      Este trabajo explora diferentes aspectos y secciones relativas al fracaso en la obra de Wilhelm Raabe Pfister’s Mill y su contexto histórico, el cual está estrechamente relacionado con el discurso alemán sobre el medio ambiente en la segunda mitad del siglo XIX. Raabe trató de llamar la atención y esbozar soluciones respecto a un problema medioambiental de alta importancia para aquellos días, siendo su objetivo transmitir y analizar las percepciones a través de experiencias cotidianas de carácter sensorial que se hacen manifiestas culturalmente mediante la comunicación. Su objetivo es utilizar la novela como un medio de comunicación de los procesos que provocan transformaciones en “enclaves socio-naturales” afectados por contaminación industrial. La incapacidad en última instancia del autor para alcanzar este objetivo hace que el presente ensayo no deba entenderse como un fracaso de la forma literaria, sino como una característica inherente al discurso público sobre la ecología política de la época: que se fundamenta en el cambio de percepción popular del medio ambiente. Se refiere no sólo a documentes literarios, sino también a fuentes históricas, este trabajo pretende desentrañar una compleja red de relaciones en torno una obra clásica de literatura ecológica alemana.
Identification of physicochemical properties that modulate nanoparticle aggregation in blood
Authors: Soddu Ludovica , Trinh Duong N , Dunne Eimear , Kenny Dermot , Bernardini Giorgia , Kokalari Ida , Marucco Arianna , Monopoli Marco P , Fenoglio Ivana
Published: April 2020

Inorganic materials are receiving significant interest in medicine given their usefulness for therapeutic applications such as targeted drug delivery, active pharmaceutical carriers and medical imaging. However, poor knowledge of the side effects related to their use is an obstacle to clinical translation. For the development of molecular drugs, the concept of safe-by-design has become an efficient pharmaceutical strategy with the aim of reducing costs, which can also accelerate the translation into the market. In the case of materials, the application these approaches is hampered by poor knowledge of how the physical and chemical properties of the material trigger the biological response. Hemocompatibility is a crucial aspect to take into consideration for those materials that are intended for medical applications. The formation of nanoparticle agglomerates can cause severe side effects that may induce occlusion of blood vessels and thrombotic events. Additionally, nanoparticles can interfere with the coagulation cascade causing both pro- and anti-coagulant properties. There is contrasting evidence on how the physicochemical properties of the material modulate these effects. In this work, we developed two sets of tailored carbon and silica nanoparticles with three different diameters in the 100–500 nm range with the purpose of investigating the role of surface curvature and chemistry on platelet aggregation, activation and adhesion. Substantial differences were found in the composition of the protein corona depending on the chemical nature of the nanoparticles, while the surface curvature was found to play a minor role. On the other hand, large carbon nanoparticles (but not small carbon nanoparticles or silica nanoparticles) have a clear tendency to form aggregates both in plasma and blood. This effect was observed both in the presence or absence of platelets and was independent of platelet activation. Overall, the results presented herein suggest the existence of independent modes of action that are differently affected by the physicochemical properties of the materials, potentially leading to vessel occlusion and/or formation of thrombi in vivo.
Copper-catalyzed O-alkenylation of phosphonates
Authors: Vázquez-Galiñanes Nuria , Andón-Rodríguez Mariña , Gómez-Roibás Patricia , Fañanás-Mastral Martín
Published: April 2020

Copper catalysis allows the direct oxygen alkenylation of dialkyl phosphonates with alkenyl(aryl)iodonium salts with selective transfer of the alkenyl group. This novel methodology proceeds with a wide range of phosphonates under mild conditions and gives straightforward access to valuable enol phosphonates in very good yields.
Synthesis of disparlure and monachalure enantiomers from 2,3-butanediacetals
Authors: Drop Adam , Wojtasek Hubert , Frąckowiak-Wojtasek Bożena
Published: April 2020

2,3-Butanediacetal derivatives were used for the stereoselective synthesis of unsymmetrically substituted cis-epoxides. The procedure was applied for the preparation of both enantiomers of disparlure and monachalure, the components of the sex pheromones of the gypsy moth (Lymantria dispar) and the nun moth (Lymantria monacha) using methyl (2S,3R,5R,6R)-3-ethylsulfanylcarbonyl-5,6-dimethoxy-5,6-dimethyl-1,4-dioxane-2-carboxylate as the starting material.
PERTANGGUNGJAWABAN SOSIAL PADA PERLAKUAN AKUNTANSI DI PERUSAHAAN UNTUK PENGEMBANGAN LINGKUNGAN MASYARAKAT
Authors: Roli Baranto
Published: April 2020

Penelitian ini memiliki tujuan untuk menelaah bagaimana tanggung jawab sosial perusahaan (corporate social responsibility/CSR) untuk menerapan dan memperlakukaan akuntansi dalam upaya pengembangan masyarakat di lingkungan perusahaan PT Semen Tonasa. Sumber data didapatkan dari data primer dan data sekunder. Data primer berupa wawancara langsung dengan pihak perusahaan dan masyarakat. Sementara data sekunder berupa data yang diperoleh dari data internal perusahaan. Metode yang digunakan adalah metode kualitatif deskriptif. Hasil penelitian menunjukkan bahwa program CSR dalam bentuk comdev yang dilaksanakan oleh PT. Semen Tonasa sudah sangat membantu lingkungan masyarat dan telah dirasakan manfaatnya oleh masyarakat dan telah berjalan secara efektif, namun perlu ditindaklanjuti mengenai beberapa program yang pelaksanaannya masih berjalan tanpa adanya pengawasan ekstra dari pihak perusahaan. Laporan akuntansi CSR bersumber dari laba tahun berjalan sebesar 5% sesuai dengan RUPS.
AMOSTRAGEM DE FOLHA EM CANA-DE-AÇÚCAR SUBMETIDA À ADUBAÇÃO NITROGENADA
Authors: Rozane Danilo Eduardo , Prado Renato De Mello , Romualdo Liliane Maria , Pancelli Márcio Alexandre , Franco Claudenir Facincani
Published: April 2020

AMOSTRAGEM DE FOLHA EM CANA-DE-AÇÚCAR SUBMETIDA À ADUBAÇÃO NITROGENADA
AVALIAÇÃO DO TEMPO DE INDUÇÃO DE RESISTÊNCIA AO PULGÃO-VERDE Schizaphis graminum (ROND.) (HEMIPTERA: APHIDIDAE) EM PLANTAS DE TRIGO TRATADAS COM ÁCIDO SILÍCICO
Authors: Filgueiras Camila Cramer , Moraes Jair Campos , Santos Fabíola Alves , Lopes Amália Torrezan
Published: April 2020

O trigo é um dos cereais mais cultivados em todo o mundo, sendo o pulgão-verde importante inseto-praga dessa cultura. Métodos de controle como aplicação de silício, que aumentam a resistência das plantas ao ataque de insetos praga têm sido cada vez mais pesquisados. Este trabalho objetivou monitorar o tempo entre a aplicação do ácido silícico em plantas de trigo e a indução de resistência ao pulgão. O experimento foi conduzido em casa de vegetação e adotou-se o DBC, em esquema fatorial 2 (com e sem silício) x 5 (avaliações após 24, 48, 72, 96 e 120 horas da aplicação de silício), com 8 repetições. Os tratamentos com Si consistiram na aplicação, em drench, de 50 mL/vaso de solução de ácido silícico a 1%, equivalendo a 4t de SiO2/ha. Foi realizado teste de preferência, com chance de escolha. Utilizaram-se gaiolas cilíndricas com dois orifícios, nos quais foram colocadas uma folha da planta tratada com Si (sem ser destacada da planta) e uma folha da outra planta não tratada com Si (testemunha). Cinco pulgões adultos foram colocados em cada orifício da gaiola e avaliados após 24 horas. O ácido silícico induziu resistência ao pulgão-verde 72 horas após a sua aplicação em plantas de trigo.
FORRAGEAMENTO DE Heterotermes tenuis (HAGEN) EM DIFERENTES PROFUNDIDADES NO SOLO EM POVOAMENTOS DE Eucalyptus spp. NO MUNICÍPIO DE CUIABÁ-MT
Authors: Castro Cibele Kotsubo da Cunha e , Dorval Alberto , Peres Filho Otávio , Silva Alex Lima da , Souza Édila Cristina De , Marques Eli Nunes
Published: April 2020

Este trabalho teve como objetivo estudar o comportamento de forrageamento de Heterotermes tenuis (Hagen), em diferentes profundidades no solo através de iscas celulósicas. A pesquisa foi realizada de junho de 2009 a maio de 2010 em plantios de Eucalyptus spp., no município de Cuiabá, Estado de Mato Grosso. As coletas foram mensais. Na análise dos dados foi utilizado o modelo de Poisson Inflacionado de Zeros (PIZ). A médias de indivíduos coletados nas armadilhas instaladas a 100cm de profundidade foi significativamente diferente das médias das armadilhas instaladas nas demais profundidades testadas. O talhão plantado do clone Urocam MG1277 mostrou ser o mais susceptível à ocorrência de Heterotermes tenuis e o talhão de Eucalyptus camaldulensis mostrou ser o menos preferido por esta espécie de térmita.
PARÂMETROS GENÉTICOS E SELEÇÃO DE PROCEDÊNCIAS E PROGÊNIES DE ERVA-MATE NATIVA NO ESTADO DE MATO GROSSO DO SUL
Authors: Costa Reginaldo Brito da , Resende Marcos Deon Vilela de , Martinez Diego Tyszka , Roel Antonia Railda , Rodrigues Natasha Brianez , Contini Adriana Zanirato
Published: April 2020

O estudo objetivou estimar parâmetros genéticos e ganho com seleção precoce em procedências e progênies de erva-mate nativas, quanto aos caracteres de crescimento, subsidiando o programa de melhoramento genético da espécie no Estado de Mato Grosso do Sul (Brasil). As sementes foram coletadas de três procedências, com 25 matrizes de polinização aberta de cada procedência, nos municípios de Ponta Porã, Aral Moreira e Laguna Carapã, MS. Os testes foram instalados nos municípios de Tacuru, Amambai e Ponta Porã, sob delineamento de blocos ao acaso com 75 tratamentos e 5 repetições por local. Aos 2 anos de idade, as plantas foram avaliadas quanto aos caracteres altura, diâmetro do coleto e número de lançamentos foliares, usando-se a metodologia de modelo linear misto do software Selegen - Reml/Blup. A maior parte da variação genética encontra-se distribuída dentro das procedências. As herdabilidades individuais no sentido restrito para os caracteres estudados foram de altas magnitudes, indicando expressivo controle genético das progênies e progresso com seleção precoce. O programa de melhoramento genético pode ser conduzido em apenas um dos locais, tendo em vista a similaridade dos ambientes.
DESEMPENHO DE PROGÊNIES DE AÇAIZEIROS PROVENIENTES DE DUAS PROCEDÊNCIAS AVALIADAS PELO GRÁFICO DE CAIXA
Authors: Yokomizo Gilberto Ken-Iti , Santos George Reis dos , Furtado Renan Gomes , Brandão Ancelma Pereira , Colares Irecê Bezerra
Published: April 2020

Um importante componente da dieta alimentar dos habitantes ribeirinhos e nas cidades do Amapá e Pará é o açaí, havendo também o interesse em outras regiões e países. São, portanto, importantes as pesquisas visando seleção de materiais superiores para suprir a crescente demanda de consumo. No presente estudo foram comparadas, no campo experimental de Mazagão, da Embrapa Amapá, 75 progênies da região do município do Afuá, PA com 100 progênies da região leste da ilha de Marajó, PA. O experimento foi instalado em blocos ao acaso com duas repetições, sendo avaliados os caracteres: quantidade de estipes adultas, quantidade de estipes jovens, quantidade de rebentos, altura de planta adulta, altura de planta jovem, circunferência do estipe mais velho, circunferência média das estipes jovens, número de cachos, comprimento do entrenó e quantidade de folhas. Os resultados indicaram desempenhos diferentes entre as procedências para todos os caracteres avaliados. As procedências oriundas do Afuá apresentaram valores superiores às do Marajó, excetuando-se apenas a quantidade de rebentos. O número de folhas foi o único caráter que não apresentou diferenças. Foram observados valores nos extremos dos gráficos de caixa que apresentam progênies com potencial para serem selecionadas. O gráfico de caixa demonstrou ser um instrumento eficiente para distinguir as duas procedências.
CORRELAÇÃO ENTRE CONTAMINAÇÃO GASTROINTESTINAL E PRESENÇA DE Salmonella spp. EM CARCAÇAS DE FRANGO INDUSTRIALIZADAS NO RIO GRANDE DO SUL
Authors: Brizio Ana Paula Dutra Resem , Isolan Leonardo Werlang , Salles Bruna , Prentice Carlos
Published: April 2020

O presente trabalho teve como objetivo avaliar a incidência de contaminação gastrointestinal visível em carcaças industrializadas de frango na etapa de evisceração e verificar a relação com a presença de Salmonella spp. em carcaças após o sistema de pré-resfriamento. O estudo foi realizado em um abatedouro sob inspeção federal, localizado no Estado do Rio Grande do Sul, no período de julho de 2011 a abril de 2012. Foram avaliados registros de ocorrência de contaminação gastrointestinal visível, em um total próximo de 8,5x107 carcaças de aves, e a incidência de Salmonella spp. em 357 amostras. O resultado médio de contaminação gastrointestinal visível foi de 3,37% ± 0,61, enquanto o percentual de prevalência de Salmonella spp. foi de 0,57% ± 0,83. Através do teste de correlação, utilizando o programa Statistica 7.0 (p<0,05), foi possível constatar que não houve relação significativa entre as variáveis estudadas (p= 0,4959). Os resultados apontaram que as operações de abate e processamento de aves foram realizadas de forma sanitária, através do controle das Boas Praticas de Fabricação (BPF), o que propiciou baixos índices de presença de Salmonella spp. nas amostras.
UNA NUEVA ESPECIE DE Shevtchenkella (ACARI, PROSTIGMATA, ERIOPHYIDAE) DE ARGENTINA
Authors: Ballari Maria Celeste , De Quinteros Sara L. Quintana , Flechtmann Carlos H. W.
Published: April 2020

Shevtchenkella marceloi Flechtmann, n.sp. is described and figured from female, larva and nymph specimens, from Tessaria dodonaeifolia (Hook. y Arn.) Cabrera from Jujuy, Argentina. Remarks on Shevtchenkella species from South America are presented.
NÚMERO DE FRUTOS POR PLANTA NA PRODUÇÃO E QUALIDADE DE MELÃO RENDILHADO CULTIVADO EM SUBSTRATO
Authors: Oliveira Sueyde Fernandes de , Castoldi Renata , Charlo Hamilton Cesar De Oliveira , Vargas Pablo Furlan , Braz Leila Trevisan
Published: April 2020

O presente trabalho teve por objetivo avaliar dois híbridos de melão rendilhado e o efeito do número de frutos por planta na produção e qualidade de melão rendilhado cultivado em fibra da casca de coco com fertirrigação. Com base nos resultados obtidos, levando-se em consideração as características quantitativas e qualitativas dos frutos, conclui-se que três frutos por planta proporciona maior produção com melhores características qualitativas, e o híbrido Bônus n° 2 produz frutos de melhor qualidade.
EFICÁCIA DO INSETICIDA INDOXACARBE NA MORTALIDADE DE TUTA ABSOLUTA (MEYRICK) (LEPIDOPTERA: GELECHIIDAE) UTILIZANDO PULVERIZAÇÃO HIDRÁULICA
Authors: Bernardes Amanda Mirelle , Teixeira Mauri Martins , Fernandes Haroldo Carlos , Quirino André Luís da Silva , Santiago Humberto , Maciel Christiam Felipe Silva
Published: April 2020

Objetivou-se com o presente trabalho avaliar a mortalidade da traça do tomateiro (Tuta absoluta) após 24 e 48 horas, com a utilização do inseticida Indoxacarbe utilizando 2 doses do produto (50% e 100% da dose recomendada). Não houve diferença significativa nos valores de mortalidade considerando os diferentes volumes de pulverização e doses utilizadas. Entretanto observou-se diferença significativa nos valores de mortalidade considerando as posições na planta, sendo os maiores valores de mortalidade encontrados nas partes externas do dossel da planta.
PRODUTIVIDADE DE PASTOS CONSORCIADOS COM DIFERENTES LEGUMINOSAS FORRAGEIRAS
Authors: Olivo Clair Jorge , Agnolin Carlos Alberto , Bratz Vinícius Felipe , Diehl Michelle Schalemberg , Simonetti Gabriela Descovi , Correa Marcos Da Rosa , Rodrigues Patrícia Fernandes , Fantineli Dreisse Gabbi , Nunes Jéssica Soares , De Bem Cláudia Marques
Published: April 2020

O objetivo desta pesquisa foi avaliar a massa da forragem e a taxa de lotação em três sistemas forrageiros com capim elefante (CE) + azevém (AZ) + espécies de crescimento espontâneo (ECE); CE + AZ + ECE + amendoim forrageiro (AM); e CE + AZ + ECE + trevo vermelho (TV) durante os períodos hibernal e estival, em lotação rotacionada com bovinos leiteiros. Os valores médios de produção de forragem e da taxa de lotação foram de 9,19; 9,59; 9,78 Mg ha-1 e de 2,20; 2,47 e 2,30 UA ha-1 dia-1para os respectivos sistemas forrageiros. Melhores resultados foram obtidos nos consórcios com amendoim forrageiro e com trevo vermelho.
SUPERAÇÃO DE DORMÊNCIA DE SEMENTES DE Capsicum baccatum var. pendulum (PIMENTA DEDO-DE-MOÇA)
Authors: Venturin Afonso Zucolotto , Lopes José Carlos , Manhone Pedro Ramon , Zanotti Rafael Fonseca , Carvalho Sara De Oliveira
Published: April 2020

Objetivou-se avaliar o efeito de tratamentos químicos na superação da dormência de sementes de Capsicum baccatum var. pendulum. Os tratamentos utilizados foram: T1- água destilada; T2- Imersão em solução de citrato de sildenafila; T3- Imersão em solução de GA3; T4- Imersão em solução de SNP; T5- Imersão em solução de KNO3; T6- Imersão em solução de HNO3. O tratamento T3 apresentou médias superiores aos demais tratamentos. Sementes tratadas com GA3 apresentaram maior vigor. Temperaturas de 30 e 20-30°C as sementes externaram melhor seu vigor apresentando maior massa fresca, massa seca, comprimento da parte aérea e comprimento de raiz.
COMPACTAÇÃO EM ARGISSOLO VERMELHO-AMARELO SOB CULTIVO DE VIDEIRA NA REGIÃO SEMIÁRIDA BRASILEIRA
Authors: Siqueira André Soares de , Cortez Jorge Wilson , Nagahama Hideo De Jesus , Olszevski Nelci , Souza Eder Ignácio de
Published: April 2020

Objetivou-se avaliar espacialmente a compactação em Argissolo Vermelho-Amarelo cultivado com videira. A avaliação espacial permitiu identificar as zonas de maior concentração das cargas aplicadas pelo tráfego e pelo manejo, que ocorreram até a profundidade de0,20m.
Pola Komunikasi Interpersonal Dalam Menjalin Hubungan Baik terhaadap Klien pada Radio MUSIC CITY 107,50 FM
Authors: Mela Mela
Published: April 2020

Karya Tulis Ilmiah ini membahas mengenai pola komunikasi interpersonal dalam menjalin hubungan baik terhadap klien oleh radio Music City 107,50 FM Jakarta. Tujuan penelitian ini adalah untuk mengetahui bagaimana pola komunikasi interpersonal dalam menjalin hubungan baik terhadap klien pada radio Music City 107,50 FM Jakarta. Penelitian ini merupakan penelitian kualitatif deskriptif dengan menggunakan studi kasus untuk mengumpul data yang diperoleh adalah data wawancara tatap muka dengan radio Music City yang menjadi informan dalam penelitian ini berjumlah 3 orang. Dari hasil penelitian yang telah dilakukan maka dapat diketahui bahwa pola komunikasi interpersonal radio Music City dalam menjalin hubungan baik menggunakan pola sirkular. Dalam proses komunikasinya radio Music City memiliki aspek menghargai, empati, dimengerti, keterbukaan, dan rendah hati. Sehingga dalam proses pemasangan iklan dapat berjalan dengan baik
Teknik Pengambilan Gambar Televisi (Studi Kasus Pesbukers ANTV)
Authors: Diki Diki
Published: April 2020

ANTV mempunyai program unggulan yang berbasis komedi salah satu program unggulan ANTV adalah acara”PESBUKERS”, Pesbukers merupakan sebuah acara televisi yang ditayangkan oleh ANTV setiap Senin hingga Jumat. Proses produksi sebuah program sangat berpengaruh untuk membuat program acara tersebut menarik atau tidak. Dalam perjalanan produksi ini pra produksi, produksi dan pasca produksi. Tim kreatif, program director dan kameramen berperan penting dalam berlangsungnya proses produksi program acara pesbukers. Pada saat produksi semua crew dituntut untuk bekerja sama dengan baik. Pengambilan gambar yang baik akan menyampaikan pesan setiap adegan yang berlangsung. Tujuan dari penelitian ini yaitu untuk mengetahui bagaimana proses produksi dan teknik pengambilan gambar sebuah program acara televisi. Penelitian ini menggunakan metode deskriptif kualitatif yang dikaitkan dengan teori teknik pengambilan gambar.Pra produksi, produksi, pasca produksi. proses ini yang menjadi acuan penting dari awal pra produksi hingga menjadi hasil tayangan yang baik
Strategi Program Top Stock 1 Dalam Menyajikan Konten Berita Ekonomi Di IDX Channel
Authors: Indri Indri
Published: April 2020

Program Top Stock 1 adalah sebuah program buletin berita teraktual tentang performa bisnis dari emiten setiap harinya yang membahas mengenai isu isu ekonomi. Tujuan penelitian ini adalah untuk mengetahui bagaimana strategi program Top Stock 1 dalam  menyajikan konten berita ekonomi di IDX Channel. Metode penelitian ini menggunakan penelitian kualitatif dengan desain deskrisptif dan menggunakan pendekatan observasi dimana data yang digunakan adalah data primer dari hasil pengamatan, wawancara, dan studi dokumentasi serta data sekunder dengan tinjauan studi kepustakaan untuk mempertajam teori. Berdasarkan hasil penelitian diketahui bahwa strategi produksi program Top Stock 1 dalam menyajikan berita ekonomi di IDX Channel terbagi menjadi tiga tahap yaitu pra produksi yang dimulai dari proses penemuan ide, proses perencanaan, dan proses persiapan, lalu ada tahap produksi yang dilakukan setelah persiapan yang dilakukan sudah matang dalam tahap pra produksi, lalu tahap pasca produksi yang merupakan proses evaluasi untuk mengetahui perkembangan dari program yang telah berjalan.
Artvin Kent Ormanı ve halkın beklentileri
Authors: İNANÇ Sevim
Published: April 2020

Bu çalışma ile Artvin’de yaşayan halkın kent ormanına
bakışı, kent ormanından beklentileri ve kent ormanı algısı incelenmiştir.
Çalışma sonucunda 100 kişiyle yapılan anket sonuçlarına göre Artvin’de yaşayan
halkın Artvin Kent Ormanı’nı öncelikli olarak piknik, temiz hava, gidilecek
başka bir yerin olmaması, fiziksel ve psikolojik rahatlama ve sportif
faaliyetler nedeniyle kullandığı belirlenmiştir. Ayrıca Artvin Kent Ormanı’ndaki
en büyük eksiklikler ise çevre kirliliği, yolların bakımsız olması ve
bilgilendirme eksikliği olarak görülmektedir. Yeme içme olanaklarının kısıtlı
olması da yine kent ormanını kullanan kişiler tarafından büyük bir sorun olarak
ifade edilmektedir. Kent ormanından daha fazla fayda sağlamak için ulaşım
olanaklarının iyileştirilmesi, yolların bakımlarının daha iyi yapılması ve
alanın tanıtımının daha iyi bir şekilde yapılması gerekmektedir.
Synthesis, Characterization, Antimalarial and Antimicrobial activities of Mixed Ibuprofen-Pyrimethamine M(II) Complexes [M = Cd, Co, Zn, Mn]
Authors: BAMİGBOYE Mercy , EJİDİKE İkechukwu
Published: April 2020

Mixed complexes of Ibuprofen-Pyrimethamine were synthesized using Cd(II) Co(II), Zn(II) and Mn(II). The mixed complexes were characterized based on some physico-chemical and spectroscopic techniques such as infrared, elemental analysis, conductivity measurements, and magnetic moment. Based on the results obtained, the complexes were formulated as [M(L1)(L2)]Cl2 , where M = metal ion, L1 = Pyrimethamine, L2 = Ibuprofen). The complexes were found to be non-electrolytes. The ligands act as bidentate towards the central metal ions with deprotonation occurring at the carboxylic group. The complexes were also analyzed by conductometric titration. Antimicrobial screening against the selected organisms: Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus substilis, Bacillus megaterium and Serratia marcescens for the complexes alongside the free ligands was investigated. Antimalarial study was investigated for the compounds against Plasmodium berhei (NK 65 strain). It was observed that the complexes showed significant potentials against the studied organisms.
Multiple Skleroz (MS) Hastalığı Öncesi ve Sonrası Beslenme Alışkanlıklarının Karşılaştırılması, Yeterli ve Dengeli Beslenmenin MS Ataklarına Olan Etkisinin İrdelenmesi
Authors: ÖZKARABULUT Ayşe Huri , ONUR Hande Nur , YAŞAR İpek
Published: April 2020

Amaç: Bu çalışmada Multiple Skleroz
(MS) hastalığı öncesi ve MS hastalığı sonrası beslenme
alışkanlıklarının karşılaştırılması, yeterli ve dengeli beslenmenin MS
ataklarına olan etkisi incelenmiştir.

Yöntem: Bu
çalışma internet üzerinden oluşturulan veri toplama formu doğrultusunda yer
gözetmeksizin ulaşılan, MS tanısı almış yaş ortalaması 34,08±7,93 yıl olan 98 hastanın katılımı ile oluşmuştur. Katılımcıların MS öncesi ve sonrası beslenme
durumları, genel bilgileri, ağırlık ve boyları, eğitim düzeyleri, çalışma
durumları ve fiziksel aktivite düzeyleri değerlendirilmiştir. Veriler
değerlendirilirken SPSS programı kullanılmıştır.

Bulgular: Sonuçlara göre atak sıklığını azaltmada probiyotik,
prebiyotik, posa, B1 vitamini ve selenyum kaynağı ürünleri tüketiminin olumlu
etkisi gözlenmiştir. Sadece B1 vitamini kaynaklarının atak sıklığı ile
istatistiksel olarak anlamlı bir ilişkisi olduğu saptanmıştır.  Omega-3 ve D vitamini takviyesi alım
durumlarının atakların sıklığı ve çeşidine etkisi gözlenmemiştir.

Sonuç: Bütün hastalıklarda
olduğu gibi MS oluşumunda, atakların sıklığında ve çeşidinde yeterli ve dengeli
beslenmenin ne kadar önemli olduğu bu çalışmada da görülmüştür. Sadece yeterli
ve dengeli beslenmenin değil sağlıklı bağırsak mikrobiyota oluşumunu etkileyen
probiyotik, prebiyotik ürünlerin, posanın, fonksiyonel besinlerin de
antioksidan özelliklerinden dolayı mutlaka tüketilmesi gerekmektedir.
Kuşakların Hemşirelikte Yönetim ve Eğitim Pratikleri Açısından İncelenmesi
Authors: SEVİNÇ Ebru , KAVGAOĞLU Derya
Published: April 2020

Sağlıkta yönetim ve eğitim çabalarından etkili ve verimli sonuçlar alınabilmesi için üzerinde durulması gereken önemli bir konu, hedef kitlenin bireysel farklılıklarının anlaşılmasıdır. Kuşak olgusu bu bireysel farklılıkların açıklanmasında, yönetsel ve eğitsel olarak etkileşim kurulacak kitlenin tanınmasında ve beklentilerinin anlaşılmasında yol gösterici bir faktör olarak değerlendirilebilir. Yaklaşık olarak yirmi beş, otuz yıllık yaş kümelerini oluşturan ve aynı çağın şartlarına maruz kaldığı için benzer davranış örüntülerine sahip bireyler öbeği olarak tanımlanan kuşak literatürde beş farklı formda yer almaktadır. Bunlar: Sessiz kuşak, bebek patlaması kuşağı, X kuşağı, Y kuşağı ve Z kuşağıdır. Sessiz kuşak hemşirelerinin yaşam boyu tek bir kurumda çok sıkı çalışma olanağına sahip olmaları iş doyumuna ulaşmaları için yeterlidir. Bebek patlaması kuşağı hemşirelerinin işleri yaşamlarının çok önemli bir bölümünü oluşturur ve iş doyum düzeyleri yüksektir. X kuşağı hemşireleri iş hayatında kendilerini zorlu, iyimser ve kendine güvenen bireyler olarak tanımlamaktadır. Bu üç kuşağı eğitsel pratikler açısından esasici ve gelenekçi stillerle, yönetsel açıdan duygusal bağlılığı pekiştirecek pratiklerle desteklemek mümkündür. Y kuşağı hemşireleri gruplar halinde çalışmakta ve teknolojiyi çok iyi kullanmaktadır. Z kuşağının ilk üyeleri önümüzdeki seneler içerisinde çalışma hayatına girmiş olacağından bu kuşakla ilgili çok fazla araştırma bulunmamakla birlikte teknoloji odaklı ve bağımsız çalışma eğilimi içinde olmaları beklenmektedir. Bu iki kuşağı eğitsel açıdan geleneksel öğretimden ziyade öğrenen merkezli ve teknoloji tabanlı etkinliklerle; yönetsel açıdan normatif bağlılığı duygusal bağlılığa dönüştürecek pratiklerle desteklemek mümkündür. Bu çalışmada, hemşireliğin kuşaklar arası bireysel, mesleki, teknolojik, örgütsel ve eğitsel olarak farklılıklarının literatür bilgileri doğrultusunda incelenmesi amaçlanmaktadır.
O PROFESSOR E O CHAMADO A “SER HOLÍSTICO”
Authors: César Dias Lopes Gabriel
Published: April 2020

This article reports the imminent challenge of being inside a holistic professor of a context where the relations clear and notadamente are notadamente marked by the Capitalism in a contrary game where speech and idealismo if confuse to the practical one and where to each day it still more seems impossible a dialogue to make. The work is argued here inside of the historical perspective as alternative for the resolution of the impasse while a double relation of simbiótica and significant transformation between the man and the nature, approaching them and becoming them coesos. A bibliographical research with authors who characterize the work of the professor in the historical context and with philosophers was used here who characterize the position of the man while to be holistic exactly ahead of a indeed massificante and desumanizador work.
ESTIMATION OF METABOLIC FLOWS OF URBAN ENVIRONMENT BASED ON FUZZY EXPERT KNOWLEDGE
Authors: Patrakeyev Igor , Mikhno Oleksii , Ziborov Victor
Published: April 2020

The quality and comfort of the urban environment serve as one of the most important factors for ensuring the competitiveness of municipalities, regions and countries. The quality of the urban environment is determined by the quality of its three components: anthropogenic, natural and social environment. The main problem of assessing the state of the urban environment is the fragmentation of methodological approaches and adequate tools for assessing the qualitative state of the urban environment. This objectively makes it difficult for municipal authorities to use this assessment as an element in the system of urban planning decision making. We have developed an intelligent information system to provide an assessment of potential, real and lost opportunities of the urban environment using fuzzy expert knowledge. This system operates in the conditions of using non-numeric, inaccurate and incomplete information to ensure the management of sustainable city development. The system for assessing the potential, real and lost opportunities of the urban environment is based on the use of fuzzy logic equations. It allows to evaluate the effectiveness of metabolic transformations of each subsystem of the urban environment.
Constraints on the Intergalactic Magnetic Field from Bow Ties in the Gamma-Ray Sky
Authors: Tiede Paul , Broderick Avery E. , Shalaby Mohamad , Pfrommer Christoph , Puchwein Ewald , Chang Philip , Lamberts Astrid
Published: April 2020

Pair creation on the cosmic infrared background and subsequent inverse-Compton scattering on the cosmic microwave background potentially reprocesses the TeV emission of blazars into faint GeV halos with structures sensitive to intergalactic magnetic fields (IGMF). Previous work has shown that these halos are then highly anisotropic and extended. If the coherence length of the IGMF is greater than the inverse-Compton cooling length of the pairs, then the orientation of the gamma-ray halo will be correlated with the direction of the magnetic field which is unknown and expected to change for each source. In order to constructively add each source we then use angular power spectra which are insensitive to the jet orientation. By looking at known GeV blazars detected by Fermi, we exclude the existence of an IGMF with coherence lengths >100 Mpc at greater than 3.9σ with current-day strengths in the range 10−16 to 10−15 G, and at 2σ from 10−17 to 10−14 G. This provides a direct measurement of the nonexistence of gamma-ray halos, providing an important check on previous results.
Cascade Model for Planetesimal Formation by Turbulent Clustering
Authors: Hartlep Thomas , Cuzzi Jeffrey N.
Published: April 2020

We use a newly developed cascade model of turbulent concentration of particles in protoplanetary nebulae to calculate several properties of interest to the formation of primitive planetesimals and to the meteorite record. The model follows, and corrects, calculations of the primary initial mass function (IMF) of planetesimals by Cuzzi et al., in which an incorrect cascade model was used. Here we use the model of Hartlep et al., which has been validated against several published numerical simulations of particle concentration in turbulence. We find that, for a range of nebula and particle properties, planetesimals may be “born big,” formed as sandpiles with diameters in the range 10–100 km, directly from freely floating particles. The IMFs have a modal nature, with a well-defined peak rather than a power-law size dependence. Predictions for the inner and outer parts of the nebula behave similarly in this regard, and observations of primitive bodies in the inner and outer nebula support such modal IMFs. Also, we present predictions of local particle concentrations on several lengthscales in which particles “commonly” find themselves, which have significance for meteoritical observations of the redox state and isotopic fractionation in regions of chondrule formation. An important difference between these results and those of Cuzzi et al. is that particle growth by sticking must proceed to a radius range of at least one to a few centimeters for the IMF and meteoritical properties to be most plausibly satisfied. That is, as far as the inner nebula goes, the predominant “particles” must be aggregates of chondrules (or chondrule-size precursors) rather than individual chondrules themselves.