scholarly journals Toroidic and antitoroidic orders in hexagonal arrays of dielectric trimers: Magnetic group approach

2021 ◽  
Vol 103 (16) ◽  
Author(s):  
Victor Dmitriev ◽  
Silvio Domingos Silva Santos ◽  
Andrey B. Evlyukhin ◽  
Anton S. Kupriianov ◽  
Vladimir R. Tuz
Keyword(s):  
Group Approach ◽  
Hexagonal Arrays

The low-resolution 3D-structure of porin, a channel-forming protein in E. coliouter membranes

1983 ◽  
Vol 41 ◽  
pp. 440-441
Author(s):  
A. Engel ◽  
D.L. Dorset ◽  
A. Massalski ◽  
J.P. Rosenbusch
Keyword(s):  
Crystal Packing ◽  
3D Structure ◽  
Gram Negative Bacteria ◽  
Protein Ratio ◽  
Crystal Forms ◽  
Large Molecules ◽  
Functional Studies ◽  
Voltage Dependent ◽  
Planar Membranes ◽  
Hexagonal Arrays

Porins represent a group of channel forming proteins that facilitate diffusion of small solutes across the outer membrane of Gram-negative bacteria, while excluding large molecules (>650 Da). Planar membranes reconstituted from purified matrix porin (OmpF protein) trimers and phospholipids have allowed quantitative functional studies of the voltage-dependent channels and revealed concerted activation of triplets. Under the same reconstitution conditions but using high protein concentrations porin aggregated to 2D lattices suitable for electron microscopy and image processing. Depending on the lipid-to- protein ratio three different crystal packing arrangements were observed: a large (a = 93 Å) and a small (a = 79 Å) hexagonal and a rectangular (a = 79 Å b = 139 Å) form with p3 symmetry for the hexagonal arrays. In all crystal forms distinct stain filled triplet indentations could be seen and were found to be morphologically identical within a resolution of (22 Å). It is tempting to correlate stain triplets with triple channels, but the proof of this hypothesis requires an analysis of the structure in 3 dimensions.

Observations on the Structure of Ta2O5

1972 ◽  
Vol 30 ◽  
pp. 540-541
Author(s):  
P. S. Kotval ◽  
C. J. Dewit
Keyword(s):  
Electron Microscope ◽  
Structural Features ◽  
Amorphous Structure ◽  
Polished Surface ◽  
Distilled Water ◽  
Anodic Films ◽  
Amorphous Films ◽  
Beam Heating ◽  
Diffraction Patterns ◽  
Hexagonal Arrays

The structure of Ta2O5 has been described in the literature in several different crystallographic forms with varying unit cell lattice parameters. Earlier studies on films of Ta2O5 produced by anodization of tantalum have revealed structural features which are not consistent with the parameters of “bulk” Ta2O5 crystalsFilms of Ta2O5 were prepared by anodizing a well-polished surface of pure tantalum sheet. The anodic films were floated off in distilled water, collected on grids, dried and directly examined in the electron microscope. In all cases the films were found to exhibit diffraction patterns representative of an amorphous structure. Using beam heating in the electron microscope, recrystallization of the amorphous films can be accomplished as shown in Fig. 1. As suggested by earlier work, the recrystallized regions exhibit diffraction patterns which consist of hexagonal arrays of main spots together with subsidiary rows of super lattice spots which develop as recrystallization progresses (Figs. 2a and b).

Establishing a Group Educational Session for Hyperacusis Patients

2019 ◽  
Vol 28 (2) ◽  
pp. 245-250
Author(s):  
Ann E. Perreau ◽  
Richard S. Tyler ◽  
Patricia C. Mancini ◽  
Shelley Witt ◽  
Mohamed Salah Elgandy
Keyword(s):  
Therapeutic Process ◽  
Treatment Options ◽  
Clinical Group ◽  
Education Session ◽  
Group Approach ◽  
Treatment Protocols ◽  
Educational Session ◽  
Evidence Based Treatment ◽  
Relationship Of ◽  
The Relationship

Purpose Audiologists should be treating hyperacusis patients. However, it can be difficult to know where to begin because treatment protocols and evidence-based treatment studies are lacking. A good place to start in any tinnitus and hyperacusis clinic is to incorporate a group educational session. Method Here, we outline our approach to establishing a hyperacusis group educational session that includes specific aspects of getting to know each patient to best meet their needs, understanding the problems associated with hyperacusis, explaining the auditory system and the relationship of hyperacusis to hearing loss and tinnitus, describing the influence of hyperacusis on daily life, and introducing treatment options. Subjective responses from 11 adults with hyperacusis, who participated in a recent clinical group education session, were discussed to illustrate examples from actual patients. Conclusions Due to the devastating nature of hyperacusis, patients need to be reassured that they are not alone and that they can rely on audiologists to provide support and guidance. A group approach can facilitate the therapeutic process by connecting patients with others who are also affected by hyperacusis, and by educating patients and significant others on hyperacusis and its treatment options. Supplemental Material https://doi.org/10.23641/asha.8121197

Hubungan Dinamika Kelompok dan Keberdayaan Peternak dengan Keberhasilan Program Kelompok Peternak Sapi Potong

2019 ◽  
Vol 2 (5) ◽  
pp. 603
Author(s):  
Muhammad Romadhon ◽  
Amiruddin Saleh
Keyword(s):  
Data Analysis ◽  
Correlation Coefficient ◽  
Group Dynamics ◽  
Descriptive Statistics ◽  
Statistic Analysis ◽  
Group Approach ◽  
The People ◽  
The Government ◽  
People Group ◽  
Cattle Farmer

A group approach having an excess because its scope broader, and in accordance with communal culture of the people. Group dynamics and independency farmers become a yardstick to judge whether the programs the government (the course of development) involving group cattle farmers cut is sustainable or not, so that it can be evaluated for sustainability the next. The purpose of research are (1) analyze group dynamics formed in the group spr mega jaya, (2) analyzed levels of independency of farmers in the farmers spr mega jaya, (3) analyze relations group dynamics and independency of farmers with the success kejar farmers spr mega jaya. Data analysis of analysis descriptive statistics (a frequency, the percentage, on the average), and statistic analysis inferential by test a correlation coefficient rank the spearman. The research results show that group dynamics spr mega jaya tends in category high, and independency of farmers spr mega jaya tends in category enough, while test relations shows that there is a positive connection welfare between group dynamics the cattle farmer and independency of farmers with the success kejar cattle farmers cut. This means that the more dynamic group spr mega jaya and independency of felt farmers high, so the success of the program group farmers who reached the higher.Keywords: group dynamics, independency of groups, sekolah peternakan rakyatABSTRAKPendekatan kelompok memiliki kelebihan karena cakupannya yang lebih luas, dan sesuai dengan budaya masyarakat komunal. Dinamika kelompok dan keberdayaan peternak menjadi tolok ukur untuk menilai apakah program pemerintah (program pembangunan) yang melibatkan kelompok peternak sapi potong bersifat sustainable atau tidak, sehingga dapat dievaluasi untuk keberlanjutan program selanjutnya. Tujuan dari penelitian adalah (1) menganalisis dinamika kelompok yang terbentuk dalam kelompok SPR Mega Jaya, (2) menganalisis tingkat keberdayaan peternak pada kelompok peternak SPR Mega Jaya, (3) menganalisis hubungan dinamika kelompok dan keberdayaan peternak dengan keberhasilan program kelompok peternak SPR Mega Jaya. Analisis data berupa analisis statistik deskriptif (frekuensi, persentase, rata-rata), dan analisis statistik inferensial dengan uji koefisien korelasi rank Spearman. Hasil penelitian menunjukkan bahwa dinamika kelompok SPR Mega Jaya cenderung pada kategori tinggi, dan keberdayaan peternak SPR Mega Jaya cenderung pada kategori cukup, sedangkan uji hubungan menunjukkan bahwa terdapat hubungan positif signifikan antara dinamika kelompok peternak dan keberdayaan peternak dengan keberhasilan program kelompok peternak sapi potong. Hal ini berarti bahwa semakin dinamis kelompok SPR Mega Jaya dan keberdayaan yang dirasakan peternak tinggi, maka keberhasilan program kelompok peternak yang tercapai semakin tinggi.Kata kunci: dinamika kelompok, keberdayaan kelompok, sekolah peternakan rakyat

The ENIGMA Brain Injury Working Group: Approach, Challenges, and Potential Benefits

2019 ◽  
Author(s):  
Elisabeth A. Wilde ◽  
Emily L. Dennis ◽  
David F Tate
Keyword(s):  
Brain Injury ◽  
Working Group ◽  
Meta Analysis ◽  
Special Issue ◽  
Group Approach ◽  
Challenges And Opportunities ◽  
Brain Structure And Function ◽  
Potential Benefits ◽  
And Function ◽  
Neuroimaging Genetics

The Enhancing NeuroImaging Genetics through Meta-Analysis (ENIGMA) consortium brings together researchers from around the world to try to identify the genetic underpinnings of brain structure and function, along with robust, generalizable effects of neurological and psychiatric disorders. The recently-formed ENIGMA Brain Injury working group includes 8 subgroups, based largely on injury mechanism and patient population. This introduction to the special issue summarizes the history, organization, and objectives of ENIGMA Brain Injury, and includes a discussion of strategies, challenges, opportunities and goals common across 6 of the subgroups under the umbrella of ENIGMA Brain Injury. The following articles in this special issue, including 6 articles from different subgroups, will detail the challenges and opportunities specific to each subgroup.

Empowerment of Rural Women through SHGs: A Study in Telangana

2017 ◽  
Vol 4 (36) ◽  
Author(s):  
Shankar Chatterjee
Keyword(s):  
Rural Women ◽  
Rural Areas ◽  
Poverty Line ◽  
Rural India ◽  
Group Approach ◽  
Research Article ◽  
Self Help ◽  
Rural Livelihood ◽  
The Family ◽  
Self Help Group

The self-help group (SHG) is a powerful instrument to empower economically backward women of rural India as the women members under the SHG not only can earn income but they feel empowered also. With the launching of Swarnajaynti Gram Swarozgar Yojana (SGSY) by the Ministry of Rural Development, Government of India from April 1999, subsequently rechristened as Deen Dayal Antyodaya Yojana–National Rural Livelihood Mission (DAY-NRLM) self-help group approach (SHG) has been given utmost importance in India for the development of rural women mainly focusing on below poverty line households. SHG concept is popular in many rural areas of India as through economic development and subsequently empowering, rural women have got a solid platform. This research article has discussed the how rural women after forming SHGs in Ranga Reddy district (R.R. District) of Telangana were not only earning and contributing to the family but felt empowered also. The study was carried out at Gandipet village of Gandipet Mandal, Ranga Reddy (R.R.) district in September 2017. The some women members of 10 different SHGs were contacted and few individual cases are presented here.

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