Foliar sclereids in tea and its wild allies, with reference to their taxonomy

2009 ◽  
Vol 22 (4) ◽  
pp. 286 ◽  
Author(s):  
Wei Zhang ◽  
Yuxi Hu ◽  
Zhenyu Li ◽  
Pingsheng Wang ◽  
Mei Xu
Keyword(s):  
Environmental Factors ◽  
Camellia Sinensis ◽  
Leaf Blade ◽  
Distribution Density ◽  
Wild Population ◽  
Distribution Patterns ◽  
Foliar Sclereids ◽  
The World ◽  
Different Ages

Camellia sinensis (L.) O.Kuntze and most of its wild allies are used for tea throughout China and in many other parts of the world. Although they all belong to Camellia section Thea, their infrasectional classification remains controversial, resulting from heavy reliance on macromorphological features. Furthermore, the identification of tea from the fragments of processed leaves is quite difficult because of the lack of reliable characters. Here, foliar sclereids of 28 species and five varieties were investigated and used to explore their utility in addressing taxonomic problems and identification of commercial teas. Our data showed that foliar sclereids exhibit a wide diversity in this section. They could be divided into 12 types (including a newly recorded dendritic type) and two distribution patterns in the leaf blade. Their forms, type combinations and distribution patterns are reliable features, not particularly influenced by environmental factors, although their distribution density sometimes varies. In addition, they appear constant in individuals of different ages within the same wild population. We conclude that foliar sclereids in the section Thea are relatively stable and their diversity and regularity are of some taxonomic value.

FAKTOR – FAKTOR YANG BERHUBUNGAN DENGAN KEJADIAN PNEUMONIA PADA BALITA DI WILAYAH KERJA PUSKESMAS WONOREJO SAMARINDA TAHUN 2017

2018 ◽  
Vol 3 (2) ◽  
pp. 76
Author(s):  
Novi Anggun Pusvitasary
Keyword(s):  
Environmental Factors ◽  
Family Member ◽  
Cause Of Death ◽  
Family Members ◽  
Smoking Behavior ◽  
Smoking Habits ◽  
P Value ◽  
Behavioral Factors ◽  
The World ◽  
Health Standards

Pneumonia disease is the leading cause of death of babies in the world. The prevalence of pneumonia in infants is 18.5 / mil. Data from Samarinda City Health Office during the last 1 year there are 91 cases of pneumonia in Karang Anyar Village and 63 cases in Teluk Lerong Ulu Village. Factors causing pneumonia are toddler factors, behavioral factors, and environmental factors. The results show there is a relationship between house humidity (p value = 0,013; OR = 0,192), house dwelling density (p value = 0,024; OR = 0,214), and family member smoking behavior (p value = 0,006; OR = 10,450) with incidence of pneumonia in toddlers in the Working Area of Puskesmas Wonorejo Samarinda. There was no correlation between house temperature (p value = 0,214; OR = 0,337), house lighting (p value = 0,095; OR = 3,188) and family disease history (p value = 0,707; OR = 0,753) with Pneumonia occurrence in infant in region Work Puskesmas Wonorejo Samarinda. It was concluded that there was a relationship between house humidity, home dwelling density, and smoking behavior of family members with the incidence of pneumonia in infants. It is recommended to be able to apply housing health requirements that meet health standards to reduce the incidence of pneumonia in infants and change smoking habits.

scholarly journals Distribution Patterns of Odonate Assemblages in Relation to Environmental Variables in Streams of South Korea

Insects ◽  
2018 ◽  
Vol 9 (4) ◽  
pp. 152 ◽  
Author(s):  
Da-Yeong Lee ◽  
Dae-Seong Lee ◽  
Mi-Jung Bae ◽  
Soon-Jin Hwang ◽  
Seong-Yu Noh ◽  
...  
Keyword(s):  
Land Use ◽  
Ecosystem Services ◽  
Environmental Factors ◽  
South Korea ◽  
Habitat Heterogeneity ◽  
Environmental Variables ◽  
Environmental Changes ◽  
Distribution Patterns ◽  
Self Organizing Map ◽  
Factors Affecting

Odonata species are sensitive to environmental changes, particularly those caused by humans, and provide valuable ecosystem services as intermediate predators in food webs. We aimed: (i) to investigate the distribution patterns of Odonata in streams on a nationwide scale across South Korea; (ii) to evaluate the relationships between the distribution patterns of odonates and their environmental conditions; and (iii) to identify indicator species and the most significant environmental factors affecting their distributions. Samples were collected from 965 sampling sites in streams across South Korea. We also measured 34 environmental variables grouped into six categories: geography, meteorology, land use, substrate composition, hydrology, and physicochemistry. A total of 83 taxa belonging to 10 families of Odonata were recorded in the dataset. Among them, eight species displayed high abundances and incidences. Self-organizing map (SOM) classified sampling sites into seven clusters (A–G) which could be divided into two distinct groups (A–C and D–G) according to the similarities of their odonate assemblages. Clusters A–C were characterized by members of the suborder Anisoptera, whereas clusters D–G were characterized by the suborder Zygoptera. Non-metric multidimensional scaling (NMDS) identified forest (%), altitude, and cobble (%) in substrata as the most influential environmental factors determining odonate assemblage compositions. Our results emphasize the importance of habitat heterogeneity by demonstrating its effect on odonate assemblages.

scholarly journals PROFIL PALATOSKISIS DI BAGIAN ILMU BEDAH PLASTIK BLU RSUP PROF. DR. R.D. KANDOU MANADO PERIODE JANUARI-DESEMBER 2011

2013 ◽  
Vol 5 (1) ◽  
Author(s):  
Kalsum Taufiq ◽  
Jan T. Ngantung ◽  
Maximillian C. H. Oley
Keyword(s):  
Retrospective Study ◽  
Environmental Factors ◽  
Plastic Surgery ◽  
Genetic Factor ◽  
Congenital Disorder ◽  
Age Group ◽  
The World ◽  
Common Etiology

Abstract: After labioschizis, palatoschizis is the most frequently encountered congenital disorder with multifactorial causes, and is a disorder that can be found in every nation in the world. Among the factors, the genetic factor was agreed upon to be a major factor. This was a descriptive retrospective  study. This study aimed to find out palatoschizis cases in the Division of Plastic Surgery, Prof. Dr. R.D. Kandou Hospital, Manado, from January to December 2011. The results showed that there were 40 cases of both disordersd in the Division of Plastic Surgery Prof Dr. R.D. Kandou Manado Hospital from January 2011 through December 2011, showing 55% with palatoschizis and 45% with labiopalatoschizis. From the total cases, 53% were females in contrast to 47% males. Fifty-seven percent represented the most frequently treated age group of 1-4 years with 72.5% requiring palatoplasty. From the total number of palatoschizis cases, as many as 58% were caused by environmental factors. Fifty-two percent were unilateral palatoschizis, in comparison to 2.5% bilateral. Conclusion: In the Division of Plastic Surgery, Prof. Dr. R.D. Kandou Hospital, Manado, from January to December 2011 most of the palatoschizis and labiopalatoschizis cases were unilateral. Environmental factors were the mot common etiology for most of the women who suffered from this disease. Palatoplasty procedures were most widely used among the largest age group of 1-4 years. Keywords: palatoschizis, labiopalatoschizis.   Abstrak: Palatoskisis merupakan kelainan kongenital yang paling sering dijumpai setelah labioskisis dengan penyebab multifaktorial, dan dijumpai pada setiap bangsa di dunia. Diantara faktor-faktor penyebabnya, faktor genetika disepakati menjadi faktor utama. Palatoskisis lebih banyak ditemukan pada perempuan. Palatoskisis unilateral kiri lebih sering dari pada yang kanan. Penelitian ini bersifat retrospektif deskriptif untuk mengetahui tentang kejadian palatoskisis di Bagian Ilmu Bedah Plastik RSUP Prof. Dr. R.D. Kandou Manado periode Januari-Desember 2011. Hasil penelitian memperlihatkan jumlah kasus di Bagian Bedah Plastik RSUP Prof. Dr. R.D. Kandou Manado periode Januari-Desember 2011 sebanyak 40 kasus dengan palatoskisis (55%) dan labiopalatoskisis (45%), lebih sering pada perempuan (53%) dibandingkan laki-laki (47%). Kelompok usia yang tersering ditangani 1-4 tahun (57%) dan jenis operasi yang digunakan yaitu palatoplasty (72,5%). Faktor penyebab yang tersering ialah faktor lingkungan (58%). Kasus palatoskisis unilateral sebanyak 52,5% sedangkan yang bilateral 2,5%. Simpulan: Di Bagian Ilmu Bedah Plastik RSUP Prof. Dr. R.D. Kandou Manado periode Januari-Desember 2011 sebagian besar kasus palatoskisis dan labiopalatoskisis ditemukan unilateral dengan lokasi defek terbanyak di bagian kiri. Jenis kelamin perempuan lebih sering ditemukan dan etiologi tersering yaitu faktor lingkungan. Kelompok usia yang tersering ditangani yaitu 1-4 tahun dan tindakan yang tersering digunakan ialah palatoplasty. Kata kunci: palatoskisis, labiopalatoskisis.

Grenadiers of the World Oceans: Biology, Stock Assessment, and Fisheries

2008 ◽  
Keyword(s):  
Stock Assessment ◽  
Distribution Patterns ◽  
Abundant Species ◽  
Trawl Survey ◽  
Bathymetric Range ◽  
Main Species ◽  
The World ◽  
Species Specific ◽  
Depth Ranges ◽  
Preanal Length

<em>Abstract</em>.—The objective of this study is to describe the distribution patterns of abundance and biomass, on a geographic and bathymetric basis, of the main macrourid species of Mozambique waters. Catch data from a demersal trawl survey (<EM>MOZAMBIQUE 07</EM>) were analyzed. The survey covered the continental shelf and upper-middle slope from 17°00’S to 26°50’S and from 100–700 m depth. Fourteen macrourid species were collected from 200 m and deeper. The most abundant species and the highest in biomass were <em>Coelorinchus braueri</em>, <em>C. trunovi, C. denticulatus</em>, <em>Ventrifossa nasuta</em>, and <em>Malacocephalus laevis</em>. Only those five species were analyzed in detail. The occurrence and yields by geographic and bathymetric range of these main species seem to reveal the existence of some species-specific preference for determinate depth ranges and/or geographic areas. Preanal length-weight relationships were estimated for <em>C. braueri, C. trunovi, </em>and <em>V. nasuta</em>: <em>a</em>= 0.00071; 0.00020; 0.00080; <em>b</em>= 2.50; 2.80; 2.76 and <em>r</em><sup>2</sup>= 0.93; 0.97; 0.78, respectively.

Leaf anatomy of the South African Danthonieae (Poaceae). III. Merxmuellera stricta

Bothalia ◽  
1980 ◽  
Vol 13 (1/2) ◽  
pp. 191-198 ◽  
Author(s):  
R. P. Ellis
Keyword(s):  
Environmental Factors ◽  
South African ◽  
Leaf Anatomy ◽  
Leaf Blade ◽  
Transverse Section ◽  
Anatomical Structure ◽  
The South ◽  
Abaxial Epidermis ◽  
Variable Species ◽  
Morphological Differences

The anatomical structure, of the leaf blade as seen in transverse section, and of the abaxial epidermis, of Merxmuellera stricta (Schrad.) Conert is described and illustrated. In this variable species four distinct anatomical “forms” are recognized viz. the typical  M. stricta form, the Cathedral Peak form, the Drakensberg form and the alpine form. The alpine and Cathedral Peak forms have recently been described as M. guillarmodiae Conert (1975). The degree of anatomical differentiation of these “forms” resembles the situation described in M. disticha (Nees) Conert (Ellis, 1980). Populations of both M. stricta and M. disticha from the Drakensberg mountains display extensive anatomical diversification which appears to be correlated with environmental factors. In addition, morphological differences are exhibited as well and the anatomical “forms” of M. stricta probably warrant taxonomic recognition.

scholarly journals Why COVID-19 Transmission Is More Efficient and Aggressive Than Viral Transmission in Previous Coronavirus Epidemics?

Biomolecules ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1312 ◽  
Author(s):  
Fatma Elrashdy ◽  
Elrashdy M. Redwan ◽  
Vladimir N. Uversky
Keyword(s):  
Middle East ◽  
Environmental Factors ◽  
Severe Acute Respiratory Syndrome ◽  
Human Population ◽  
Viral Transmission ◽  
Host Factors ◽  
The Past ◽  
Viral Structure ◽  
The World ◽  
Human Host Factors

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is causing a pandemic of coronavirus disease 2019 (COVID-19). The worldwide transmission of COVID-19 from human to human is spreading like wildfire, affecting almost every country in the world. In the past 100 years, the globe did not face a microbial pandemic similar in scale to COVID-19. Taken together, both previous outbreaks of other members of the coronavirus family (severe acute respiratory syndrome (SARS-CoV) and middle east respiratory syndrome (MERS-CoV)) did not produce even 1% of the global harm already inflicted by COVID-19. There are also four other CoVs capable of infecting humans (HCoVs), which circulate continuously in the human population, but their phenotypes are generally mild, and these HCoVs received relatively little attention. These dramatic differences between infection with HCoVs, SARS-CoV, MERS-CoV, and SARS-CoV-2 raise many questions, such as: Why is COVID-19 transmitted so quickly? Is it due to some specific features of the viral structure? Are there some specific human (host) factors? Are there some environmental factors? The aim of this review is to collect and concisely summarize the possible and logical answers to these questions.

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