The Triebenberg Laboratory-Designed for Highest Resolution Electron Microscopy and Holography

2001 ◽  
Vol 7 (S2) ◽  
pp. 894-895 ◽  
Author(s):  
Hannes Lichte ◽  
Dietrich Schulze ◽  
Michael Lehmann ◽  
Holger Just ◽  
Taher Erabi ◽  
...  
Keyword(s):  
Power Supply ◽  
Acoustic Noise ◽  
Poor Quality ◽  
Power Lines ◽  
The Poor ◽  
Main Challenge ◽  
Resolution Electron ◽  
Electron Microscopes ◽  
The City

Very often, the performance of modern electron microscopes is limited by the poor quality of the laboratory rather than by the specifications of the microscope. Therefore, with microscopes aiming at subangstrom resolution microscopy and highest performing holography methods, special measures have to be taken to reach the needed low level of AC-stray fields, vibrations, and acoustic noise. in an ”organically“ grown institute, this is very difficult to realize, if possible at all.• The Triebenberg Lab is newly built well outside the city of Dresden, in an area essentially free from disturbances, i.e. free from power lines, away from roads, trains and airplanes; fortunately, the site is shielded from wind by means of a dense belt of trees. The lab houses six microscope units each consisting of a microscope room, a room for peripheral devices (power supply, cooling units, computers, etc), and an office for up to three scientists. in view of the nearly ideal environment, the main challenge is to avoid any self-made disturbances which might arise by the operation of the lab. Therefore, without any compromise using the best art of engineering, we designed a special lab virtually free from disturbances. in the following, the main guidelines for the construction are sketched.

Investigating the Quality of Power Supply to a Large Commercial Installation

2011 ◽  
Vol 367 ◽  
pp. 159-165
Author(s):  
B.A. Adegboye ◽  
M.G. Mele
Keyword(s):  
Power Factor ◽  
Power Supply ◽  
Harmonic Distortion ◽  
Poor Quality ◽  
Holding Company ◽  
The Poor ◽  
Three Phase ◽  
Commercial Installation ◽  
Maximum Voltage

The paper investigates the quality of power supply to the Corporate Headquarters of the Power Holding Company of Nigeria (PHCN), PLC, Maitama, Abuja. This was facilitated by the measurements conducted using the harmonitor 3000 power analyzer on the secondary terminals of the two (2) 1000kVA, 11kV three-phase transformers serving the Company. The data on the network consisting of voltages, currents, power factor and harmonic distortion were acquired by the Harmonitor. Analysis of these data shows that there is significantly high variation between the minimum and the maximum voltage and that the phase loads are unbalanced. There is low power factor and the total harmonic distortions (THD) on the phases and neutral are high. The causes of the poor quality of power supply were identified and recommendations proposed taking into cognizance the complexity and sensitivity of the equipment in the network.

scholarly journals Technical assessment of energy quality on guillen stream, abdón calderón parish

2019 ◽  
Vol 6 (5) ◽  
pp. 65-72
Author(s):  
Alcira Magdalena Vélez Quiroz ◽  
Miriam Lourdes Filgueiras Sainz de Rozas ◽  
Miriam Vilaragout Llanes ◽  
Gino Mieles Miles ◽  
Antonio Vázquez Pérez
Keyword(s):  
Solar Radiation ◽  
Rural Areas ◽  
Poor Quality ◽  
Power Lines ◽  
Photovoltaic Systems ◽  
Electrical System ◽  
The Poor ◽  
Rivers And Streams ◽  
Technical Assessment

The rural areas of Abdón Calderón Parish are sites that today their population does not receive an adequate consumption of energy, first because the communities are far from the generation center and second because of the difficult access conditions of the territory studied. The power lines have installed next to the ravines where most of the population crosses rivers and streams, which cause difficulties mainly of humidity, falling poles among others, causing poor quality of service to consumers. Renewable sources of energy have distributed in the territory; one of the most prominent sources is solar energy, where solar radiation levels are high. The solution to the problems of the quality of energy in a first stage can have solved with small microgrids implementing photovoltaic systems, for this, we have been working on knowing the levels of penetration that can have assumed by the electrical system. The objective of the research is to be able to demonstrate the elements that conspire with the poor quality of the energy and propose in first stage microgrids that take advantage of solar radiation with the implementation of photovoltaic systems.

An experience of performing spirometry by trained general practitioners

2020 ◽  
pp. 34-36
Author(s):  
M. A. Pokhaznikova ◽  
E. A. Andreeva ◽  
O. Yu. Kuznetsova
Keyword(s):  
General Practitioners ◽  
Quality Criteria ◽  
Poor Quality ◽  
Male Gender ◽  
Study Research ◽  
The Poor ◽  
Quality Of Research ◽  
Forced Expiratory Maneuver ◽  
Maximal Effort

The article discusses the experience of teaching and conducting spirometry of general practitioners as part of the RESPECT study (RESearch on the PrEvalence and the diagnosis of COPD and its Tobacco-related aetiology). A total of 33 trained in spirometry general practitioners performed a study of 3119 patients. Quality criteria met 84.1% of spirometric studies. The analysis of the most common mistakes made by doctors during the forced expiratory maneuver is included. The most frequent errors were expiration exhalation of less than 6s (54%), non-maximal effort throughout the test and lack of reproducibility (11.3%). Independent predictors of poor spirogram quality were male gender, obstruction (FEV1 /FVC<0.7), and the center where the study was performed. The number of good-quality spirograms ranged from 96.1% (95% CI 83.2–110.4) to 59.8% (95% CI 49.6–71.4) depending on the center. Subsequently, an analysis of the reasons behind the poor quality of research in individual centers was conducted and the identified shortcomings were eliminated. The poor quality of the spirograms was associated either with the errors of the doctors who undertook the study or with the technical malfunctions of the spirometer.

Supply Chain Integration: Establish the Appropriate Challenges in Improving Integrated SC in an Innovative Approach of IBS

2016 ◽  
Vol 1 (3) ◽  
Author(s):  
Ani Saifuza Abd Shukor ◽  
Muhammad Fadhil Muhammad ◽  
Shamsida Saidan Khaderi ◽  
Faridah Muhammad Halil
Keyword(s):  
Supply Chain ◽  
System Integration ◽  
Publishing House ◽  
Structured Interview ◽  
Poor Quality ◽  
Supply Chain Integration ◽  
Project Environment ◽  
The Poor ◽  
International Publishing

The shift to an integrated IBS construction approach requires enhanced supply chain integration to improve the productivity as well as the poor quality of human behavioual aspect in IBS project. This paper is to identify the challenges at each tier between players to facilitate supply chain integration among the IBS players. Findings adopted from semi-structured interview revealed the critical attitude issues of human factors, lack of interaction and sharing knowledge between interdisciplinary people. The findings of this study is useful to improve integration of supply chain and enhance innovation and sharing interaction between players in the IBS Malaysian construction project environment.© 2016. The Authors. Published for AMER ABRA by e-International Publishing House, Ltd., UK. Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia.Keywords: Construction Environment; Industrialised Building System; Integration and Supply Chain 

Usability of India’s government statistics1

2020 ◽  
pp. 1-17
Author(s):  
Vikas Kumar
Keyword(s):  
National Sample ◽  
Poor Quality ◽  
Sample Surveys ◽  
Sources Of Information ◽  
Cross Sectional ◽  
Jammu And Kashmir ◽  
The Poor ◽  
Government Statistics

The quality of metadata is a crucial determinant of usability/interpretability of data. This paper draws attention to the poor quality of India’s government statistics and the paucity of metadata necessary to understand the problems. The paper suggests that there has been a decline in India both in terms of the availability and quality of metadata for key government sources of information including maps, decennial population censuses and National Sample Surveys amidst growing sophistication in the understanding of metadata. The poor quality of metadata impairs cross-sectional as well as inter-temporal comparisons and policymaking apart from concealing biases and lapses of government statisticians. The paper draws on the experience of three states – erstwhile Jammu and Kashmir, Manipur and Nagaland – where government statistics have been affected by serious errors that are not well-understood due to the lack of adequate metadata.

Numerical Analysis of Masonry under Compression via Micro-Model

2011 ◽  
Vol 243-249 ◽  
pp. 1360-1365 ◽  
Author(s):  
Wei Rong Lü ◽  
Meng Wang ◽  
Xi Jun Liu
Keyword(s):  
Joint Strength ◽  
Ultimate Load ◽  
Poor Quality ◽  
Micro Model ◽  
Element Analysis ◽  
Mortar Joint ◽  
The Poor ◽  
The Finite Element Analysis ◽  
Brick And Mortar

The micro-model, which the brick and the mortar model are separated, is used to analyze masonry. Meanwhile, the mortar is divided into three layers along the thickness direction to obtain the internal mechanical behavior of mortar, and the vertical mortar joint strength is taken as 50% strength of the horizontal mortar joint for considering the poor quality of vertical mortar joint. The compressive ultimate load and failure mode of masonry taken from the finite element analysis result, especially the vertical cracks throughout all bricks and mortar and change of brick and mortar strain, are in agreement with the experimental results. It shows that the micro-model and method adopted in paper are able to effectively apply in nonlinear structural analysis for masonry.

A ‘Galilean’ science of language

2014 ◽  
Vol 50 (3) ◽  
pp. 671-704 ◽  
Author(s):  
CHRISTINA BEHME
Keyword(s):  
Language Evolution ◽  
Relevant Literature ◽  
Child Psychology ◽  
Scientific Work ◽  
Poor Quality ◽  
The Poor ◽  
Recent Scholarship ◽  
Basic Understanding ◽  
Sixth Decade

The Science of Language, published in the sixth decade of Noam Chomsky's linguistic career, defends views that are visibly out of touch with recent research in formal linguistics, developmental child psychology, computational modeling of language acquisition, and language evolution. I argue that the poor quality of this volume is representative of the serious shortcomings of Chomsky's recent scholarship, especially of his criticism of and contribution to debates about language evolution. Chomsky creates the impression that he is quoting titbits of a massive body of scientific work he has conducted or is intimately familiar with. Yet his speculations reveal a lack of even basic understanding of biology, and an unwillingness to engage seriously with the relevant literature. At the same time, he ridicules the work of virtually all other theorists, without spelling out the views he disagrees with. A critical analysis of the ‘Galilean method’ demonstrates that Chomsky uses appeal to authority to insulate his own proposals against falsification by empirical counter-evidence. This form of discourse bears no serious relation to the way science proceeds.

scholarly journals Hyperhidrosis: prevalence and impact on quality of life

2018 ◽  
Vol 44 (4) ◽  
pp. 292-298 ◽  
Author(s):  
Erica Nishida Hasimoto ◽  
Daniele Cristina Cataneo ◽  
Tarcísio Albertin dos Reis ◽  
Antonio José Maria Cataneo
Keyword(s):  
Quality Of Life ◽  
Poor Quality ◽  
Cluster Sampling ◽  
Excessive Sweating ◽  
Medical Evaluation ◽  
Primary Hyperhidrosis ◽  
Systematic Cluster ◽  
The City ◽  
Impaired Quality

ABSTRACT Objective: To determine the prevalence of primary hyperhidrosis in the city of Botucatu, Brazil, and to evaluate how this disorder affects the quality of life in those suffering from it. Methods: A population survey was conducted in order to identify cases of hyperhidrosis among residents in the urban area of the city, selected by systematic cluster sampling. In accordance with the census maps of the city, the sample size should be at least 4,033 participants. Ten interviewers applied a questionnaire that evaluated the presence of excessive sweating and invited the subjects who reported hyperhidrosis to be evaluated by a physician in order to confirm the diagnosis. Results: A total of 4,133 residents, in 1,351 households, were surveyed. Excessive sweating was reported by 85 residents (prevalence = 2.07%), of whom 51 (60%) were female. Of those 85 respondents, 51 (60%) agreed to undergo medical evaluation to confirm the diagnosis and only 23 (45%) were diagnosed with primary hyperhidrosis (prevalence = 0.93%). Of the 23 subjects diagnosed with primary hyperhidrosis, 11 (48%) reported poor or very poor quality of life. Conclusions: Although the prevalence of self-reported excessive sweating was greater than 2%, the actual prevalence of primary hyperhidrosis in our sample was 0.93% and nearly 50% of the respondents with primary hyperhidrosis reported impaired quality of life.

scholarly journals Quality Assessment of Some Essential Children’s Medicines Sold in Licensed Outlets in Ashanti Region, Ghana

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
Grace Frimpong ◽  
Kwabena Ofori-Kwakye ◽  
Noble Kuntworbe ◽  
Kwame Ohene Buabeng ◽  
Yaa Asantewaa Osei ◽  
...  
Keyword(s):  
Quality Evaluation ◽  
Active Pharmaceutical Ingredient ◽  
Poor Quality ◽  
Surveillance Systems ◽  
Ashanti Region ◽  
The United Kingdom ◽  
The Poor ◽  
Medicine Outlets ◽  
Children’S Medicines

The quality of 68 samples of 15 different essential children’s medicines sold in licensed medicine outlets in the Ashanti Region, Ghana, was evaluated. Thirty-two (47.1%) of the medicines were imported, mainly from India (65.6%) and the United Kingdom (28.1%), while 36 (52.9%) were locally manufactured. The quality of the medicines was assessed using content of active pharmaceutical ingredient (API), pH, and microbial limit tests, and the results were compared with pharmacopoeial standards. Twenty-six (38.2%) of the samples studied passed the official content of API test while 42 (61.8%) failed. Forty-nine (72.1%) of the samples were compliant with official specifications for pH while 19 (27.9%) were noncompliant. Sixty-six (97.1%) samples passed the microbial load and content test while 2 (2.9%) failed. Eighteen (26.5%) samples passed all the three quality evaluation tests, while one (1.5%) sample (CFX1) failed all the tests. All the amoxicillin suspensions tested passed the three evaluation tests. All the ciprofloxacin, cotrimoxazole, flucloxacillin, artemether-lumefantrine, multivitamin, and folic acid samples failed the content of API test and are substandard. The overall API failure rate for imported products (59.4%) was comparable to locally manufactured (63.9%) samples. The results highlight the poor quality of the children’s medicines studied and underscore the need for regular pharmacovigilance and surveillance systems to fight this menace.

scholarly journals Quality of models supplied to dental laboratories for the fabrication of partial removable denture framework

2020 ◽  
Vol 68 ◽  
Author(s):  
Luma de Vasconcelos MENEZES ◽  
Thais Carine SILVA ◽  
Catia Maria Fonseca GUERRA ◽  
Renata CIMÕES ◽  
Bruna de Carvalho Farias VAJGEL
Keyword(s):  
Poor Quality ◽  
Metallic Structure ◽  
Removable Denture ◽  
The City ◽  
Plaster Models

ABSTRACT Objective The aim of this study was to evaluate the models and plannings of metallic framework of removable partial prosthesis sent to dental laboratories in the city of Recife. Methods: The physical and technical conditions of plaster models were sent by the dentists to 4 dental laboratories. All models were examined, photographed and recorded on a form according to the research objective. Results: A total number of 235 models sent by dental surgeons were used to prepare the metallic structure, in which none of the models presented surveying nor the path of insertion. Out of the 235 models, 41 (17.44%) presented serious failures, such as positive and negative bubbles, broken dental elements, direct retainers and damaged edentulous areas. With respect to the planning, only 22 (9.35%) models were presented with the metallic framework planning, but in an unsatisfactory way. Regarding mouth preparation, no model presented a guide plane, and only 6.8% of models had rests seats, but incorrectly prepared. Conclusion: The models evaluated presented poor quality, lack of planning and no mouth preparation. This shows the need for dental surgeons to be aware of the appropriate prosthesis models and plannings in order to ensure a satisfactory and long-term rehabilitation of the patient, as well as preserving the remaining mouth structures.

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