Effects of environmental factors and ageing on germination of golden crownbeard (Verbesina encelioides)-A wide spread weed of Northern India

2019 ◽  
Vol 51 (4) ◽  
pp. 372
Author(s):  
Dimple Goyal ◽  
Navjyot Kaur ◽  
Bhagirath Chauhan
Paleobiology ◽  
1987 ◽  
Vol 13 (2) ◽  
pp. 215-226 ◽  
Author(s):  
Jack A. Wolfe

Deciduousness in mesic, broad-leaved plants occurred in disturbed, middle-latitude environments during the Late Cretaceous. Only in polar environments in the Late Cretaceous was the deciduous element dominant, although of low diversity. The terminal Cretaceous event resulted in wide-spread selection for plants of deciduous habit and diversification of deciduous taxa, thus leaving a lasting imprint on Northern Hemisphere vegetation. Various environmental factors have played important roles in subsequent diversification of mesic, broad-leaved deciduous taxa and in origination and decline of broad-leaved deciduous forests. Low diversity and rarity of mesic deciduous plants in the post-Cretaceous of the Southern Hemisphere indicate that the inferred “impact winter” of the terminal Cretaceous event had little effect on Southern Hemisphere vegetation and climate.


2019 ◽  
Vol 15 (1) ◽  
pp. 30-38
Author(s):  
Helmiyetti Helmiyetti ◽  
Nuril Septianisa Kurnia ◽  
Yahya Yahya

Mosquitoes, one of the insects groups that have a high interaction with humans with a wide spread and cosmopolite. Factors that influence the spread of mosquitoes are the form of topography of an area and environmental factors. The aim of this research was to determine the type and abundance of mosquitoes (Diptera: Culicidae) in Banjarsari Village, Enggano District, North Bengkulu. The research was conducted in December 2018 to March 2019 with the sampling method of purposive sampling and capture of mosquitoes carried out by the Human Landing Collection and Resting Collection methods. The time of catching mosquitoes starts in the morning at 06.00-08.00 WIB, afternoon at 15.00-17.00 WIB and at night 18.00-24.00 WIB. The mosquito was identified in the Laboratory of Animal Physiology, Department of Biology, Faculty of Mathematics and Natural Sciences, Bengkulu University. The results of this research were analyzed in a qualitative frequency distribution with 3 groups of categories: many, medium and few categories. The types of mosquitoes obtained consisted of 5 types including Aedes albopictus, Armigeres subalbatus, Culex bitaeniorhynchus, Culex solitarius and Culex quinquefasciatus. The abundance of mosquitoes with many categories is found in Aedes albopictus and the abundance of categories with few species is found in Culex solitarius mosquitoes.


2021 ◽  
Vol 49 (1) ◽  
pp. 29-36
Author(s):  
Wiwik Trapsilowati ◽  
Arief Mulyono ◽  
Siska Indriyani ◽  
K. Sekar Negari ◽  
Arief Nugroho ◽  
...  

Leptospirosis is a zoonosis with a wide spread, both in Indonesia and globally. Leptospirosis risk factors are mainly behavioral and environmental factors. This study aims to describe the knowledge, behavior and environment of leptospirosis infected areas in Karangkandri Village, Cilacap Regency, Central Java. The research design was cross sectional with descriptive analysis. Respondents in the study were residents who lived in areas where leptospirosis cases occurred. Data collection was carried out by interview with a structured questionnaire instrument. The results showed that respondents who had knowledge of leptospirosis in the less category were 71.43%, 25.71% in the moderate category and 2.86% in the good category. The behavior of respondents in the less category was 85.71% and 14.29% was moderate, there was no good category. Environmental conditions in 14.29% for the less category and the medium category for 85.71%, there was no good category. Between knowledge and education there was a significant relationship (p <0.05), while knowledge with behavior and knowledge with the environment has an insignificant relationship (p> 0.05). Keywords: Leptospirosis, knowledge, behavior, environment Abstrak Leptospirosis merupakan zoonosis dengan penyebaran yang luas, baik di Indonesia maupun secara global. Faktor risiko terkait dengan kejadian leptospirosis terutama faktor perilaku dan lingkungan. Penelitian ini bertujuan untuk mendeskripsikan pengetahuan, perilaku dan lingkungan wilayah tertular leptospirosis di Desa Karangkandri, Kabupaten Cilacap, Jawa Tengah. Rancangan penelitian ini adalah cross sectional dengan analisis secara deskriptif. Responden penelitian adalah warga yang bertempat tinggal di wilayah terjadi kasus leptospirosis. Pengumpulan data dilakukan dengan wawancara dengan instrumen kuesioner terstruktur. Hasil penelitian menunjukkan bahwa responden yang memiliki pengetahuan tentang leptospirosis kategori kurang sebesar 71,43%, kategori sedang sebesar 25,71% dan 2,86% kategori baik. Perilaku responden kategori kurang sebesar 85,71% dan sedang sebesar 14,29%, kategori baik tidak ada. Kondisi lingkungan kategori kurang 14,29% dan kategori sedang sebesar 85,71% tidak ada kategori baik. Antara pengetahuan dengan pendidikan terdapat hubungan yang signifikan (p<0,05), sedang pengetahuan dengan perilaku dan pengetahuan dengan lingkungan terdapat hubungan yang tidak signifikan (p>0,05). Kata kunci: Pengetahuan, perilaku, lingkungan, leptospirosis. 


2019 ◽  
Vol 42 ◽  
Author(s):  
Nicole M. Baran

AbstractReductionist thinking in neuroscience is manifest in the widespread use of animal models of neuropsychiatric disorders. Broader investigations of diverse behaviors in non-model organisms and longer-term study of the mechanisms of plasticity will yield fundamental insights into the neurobiological, developmental, genetic, and environmental factors contributing to the “massively multifactorial system networks” which go awry in mental disorders.


Author(s):  
J. Temple Black

Since its introduction by Fernandez-Moran, the diamond knife has gained wide spread usage as a common material for cutting of thin sections of biological and metallic materials into thin films for examination in the transmission electron microscope. With the development of high voltage E.M. and scanning transmission E.M., microtomy applications will become increasingly important in the preparation of specimens. For those who can afford it, the diamond knife will thus continue to be an important tool to accomplish this effort until a cheaper but equally strong and sharp tool is found to replace the diamond, glass not withstanding.In Figs. 1 thru 3, a first attempt was made to examine the edge of a used (β=45°) diamond knife by means of the scanning electron microscope. Because diamond is conductive, first examination was tried without any coating of the diamond. However, the contamination at the edge caused severe charging during imaging. Next, a thin layer of carbon was deposited but charging was still extensive at high magnification - high voltage settings. Finally, the knife was given a light coating of gold-palladium which eliminated the charging and allowed high magnification micrographs to be made with reasonable resolution.


Author(s):  
E. Knapek ◽  
H. Formanek ◽  
G. Lefranc ◽  
I. Dietrich

A few years ago results on cryoprotection of L-valine were reported, where the values of the critical fluence De i.e, the electron exposure which decreases the intensity of the diffraction reflections by a factor e, amounted to the order of 2000 + 1000 e/nm2. In the meantime a discrepancy arose, since several groups published De values between 100 e/nm2 and 1200 e/nm2 /1 - 4/. This disagreement and particularly the wide spread of the results induced us to investigate more thoroughly the behaviour of organic crystals at very low temperatures during electron irradiation.For this purpose large L-valine crystals with homogenuous thickness were deposited on holey carbon films, thin carbon films or Au-coated holey carbon films. These specimens were cooled down to nearly liquid helium temperature in an electron microscope with a superconducting lens system and irradiated with 200 keU-electrons. The progress of radiation damage under different preparation conditions has been observed with series of electron diffraction patterns and direct images of extinction contours.


2020 ◽  
Vol 134 (18) ◽  
pp. 2447-2451
Author(s):  
Anissa Viveiros ◽  
Gavin Y. Oudit

Abstract The global prevalence of obesity has been rising at an alarming rate, accompanied by an increase in both childhood and maternal obesity. The concept of metabolic programming is highly topical, and in this context, describes a predisposition of offspring of obese mothers to the development of obesity independent of environmental factors. Research published in this issue of Clinical Science conducted by Litzenburger and colleagues (Clin. Sci. (Lond.) (2020) 134, 921–939) have identified sex-dependent differences in metabolic programming and identify putative signaling pathways involved in the differential phenotype of adipose tissue between males and females. Delineating the distinction between metabolically healthy and unhealthy obesity is a topic of emerging interest, and the precise nature of adipocytes are key to pathogenesis, independent of adipose tissue volume.


2016 ◽  
Vol 1 (12) ◽  
pp. 83-93 ◽  
Author(s):  
Mary Blake Huer ◽  
Travis T. Threats

The World Health Organization's (WHO's) 2001 International Classification of Functioning Disability and Health (ICF) has as one of its central tenets the full inclusion of persons with disabilities in society. It acknowledges the need for medical and rehabilitation intervention in its biopscychosocial framework. However, the WHO realizes that society must do its part to facilitate this full participation and empowerment. Persons with complex communication needs (PWCCN) often need augmentative and alternative communication (AAC) in order to express themselves. However, in order to access and successfully use AAC, PWCCN need access to the necessary AAC devices and services, as well as a willing society to interact with them as full contributing members of society. The factors outside of a person's specific physical and/or cognitive functional limitations are addressed in the ICF via the Personal and Environmental Factors. Personal Factors include the individual's personality traits, lifestyle, experiences, social/educational/professional background, race, gender, and age. Environmental Factors include community support systems, social service agencies, governments, social networks, and those persons that interact with the PWCCN. This article addresses the sociopolitical influences on PWCCN and their functioning from a human rights perspective. The necessary introspective role of speech-language pathologists in this process is explored.


2004 ◽  
Vol 171 (4S) ◽  
pp. 99-99
Author(s):  
Vincenzo Serretta ◽  
Vincenzo Altieri ◽  
Giuseppe Morgia ◽  
Rosalinda Allegro ◽  
Alessandra Di Lallo ◽  
...  

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