Effect of Via Etch Profile and Barrier Metal on Electromigration Performance of W-Filled Via Structure in TiN/AlCu/TiN Metallization

1995 ◽  
Vol 391 ◽  
Author(s):  
Larry M. Ting ◽  
G. Dixit ◽  
M. Jain ◽  
K. A. Littau ◽  
H. Tran ◽  
...  
Keyword(s):  
Critical Factor ◽  
Process Variations ◽  
Precise Control ◽  
Bottom Level ◽  
Via Hole ◽  
Barrier Metal ◽  
Etch Profile ◽  
Quality Of Contact

AbstractIn this study, we have evaluated electromigration performance of W-plug vias, fabricated with process variations in via hole etching as well as in via barrier deposition, on a TiN(barrier)/AlCu/TiN metallization system. We found that via etch profile scheme as well as deposition conformity for via barrier can significantly affect W-plug via lifetimes. The results indicate that the quality of contact with AlCu layer of bottom level metal is a critical factor in determining via lifetime. Precise control of via etching or by use of conformal via barrier to ensure a good barrier between W-plug and the AlCu of bottom level metal is essential for achieving reliable via structures.

Biomimetic Design of 3D Printed Tissue-engineered bone Constructs

2020 ◽  
Vol 16 ◽  
Author(s):  
Wei Liu ◽  
Shifeng Liu ◽  
Yunzhe Li ◽  
Peng Zhou ◽  
Qian ma
Keyword(s):  
Tissue Engineering ◽  
3D Printing ◽  
Advanced Materials ◽  
Bionic Design ◽  
Material Interfaces ◽  
Precise Control ◽  
Cell Printing ◽  
Biomimetic Scaffolds ◽  
3D Printed

Abstract:: Surgery to repair damaged tissue, which is caused by disease or trauma, is being carried out all the time, and a desirable treatment is compelling need to regenerate damaged tissues to further improve the quality of human health. Therefore, more and more research focus on exploring the most suitable bionic design to enrich available treatment methods. 3D-printing, as an advanced materials processing approach, holds promising potential to create prototypes with complex constructs that could reproduce primitive tissues and organs as much as possible or provide appropriate cell-material interfaces. In a sense, 3D printing promises to bridge between tissue engineering and bionic design, which can provide an unprecedented personalized recapitulation with biomimetic function under the precise control of the composition and spatial distribution of cells and biomaterials. This article describes recent progress in 3D bionic design and the potential application prospect of 3D printing regenerative medicine including 3D printing biomimetic scaffolds and 3D cell printing in tissue engineering.

scholarly journals A Review of Evidence-Based Recommendations for Pericoronitis Management and a Systematic Review of Antibiotic Prescribing for Pericoronitis among Dentists: Inappropriate Pericoronitis Treatment Is a Critical Factor of Antibiotic Overuse in Dentistry

2021 ◽  
Vol 18 (13) ◽  
pp. 6796
Author(s):  
Jan Schmidt ◽  
Martina Kunderova ◽  
Nela Pilbauerova ◽  
Martin Kapitan
Keyword(s):  
Systematic Review ◽  
Local Therapy ◽  
Critical Factor ◽  
Antibiotic Use ◽  
Narrative Review ◽  
Antibiotic Prescribing ◽  
Evidence Based ◽  
Antibiotic Overuse ◽  
Clinically Significant

This work provides a narrative review covering evidence-based recommendations for pericoronitis management (Part A) and a systematic review of antibiotic prescribing for pericoronitis from January 2000 to May 2021 (Part B). Part A presents the most recent, clinically significant, and evidence-based guidance for pericoronitis diagnosis and proper treatment recommending the local therapy over antibiotic prescribing, which should be reserved for severe conditions. The systematic review includes publications analyzing sets of patients treated for pericoronitis and questionnaires that identified dentists' therapeutic approaches to pericoronitis. Questionnaires among dentists revealed that almost 75% of them prescribed antibiotics for pericoronitis, and pericoronitis was among the top 4 in the frequency of antibiotic use within the surveyed diagnoses and situations. Studies involving patients showed that antibiotics were prescribed to more than half of the patients with pericoronitis, and pericoronitis was among the top 2 in the frequency of antibiotic use within the monitored diagnoses and situations. The most prescribed antibiotics for pericoronitis were amoxicillin and metronidazole. The systematic review results show abundant and unnecessary use of antibiotics for pericoronitis and are in strong contrast to evidence-based recommendations summarized in the narrative review. Adherence of dental professionals to the recommendations presented in this work can help rapidly reduce the duration of pericoronitis, prevent its complications, and reduce the use of antibiotics and thus reduce its impact on patients' quality of life, healthcare costs, and antimicrobial resistance development.

scholarly journals Recent Advances in Myoelectric Control for Finger Prostheses for Multiple Finger Loss

2021 ◽  
Vol 11 (10) ◽  
pp. 4464
Author(s):  
Viritpon Srimaneepong ◽  
Artak Heboyan ◽  
Azeem Ul Yaqin Syed ◽  
Hai Anh Trinh ◽  
Pokpong Amornvit ◽  
...  
Keyword(s):  
Web Of Science ◽  
Myoelectric Control ◽  
Original Research ◽  
Prosthetic Hand ◽  
Precise Control ◽  
Prosthetic Hands ◽  
Prosthesis Retention ◽  
Finger Prosthesis ◽  
Artificial Hand

The loss of one or multiple fingers can lead to psychological problems as well as functional impairment. Various options exist for replacement and restoration after hand or finger loss. Prosthetic hand or finger prostheses improve esthetic outcomes and the quality of life for patients. Myoelectrically controlled hand prostheses have been used to attempt to produce different movements. The available articles (original research articles and review articles) on myoelectrically controlled finger/hand prostheses from January 1922 to February 2021 in English were reviewed using MEDLINE/PubMed, Web of Science, and ScienceDirect resources. The articles were searched using the keywords “finger/hand loss”, “finger prosthesis”, “myoelectric control”, and “prostheses” and relevant articles were selected. Myoelectric or electromyography (EMG) signals are read by myoelectrodes and the signals are amplified, from which the muscle’s naturally generated electricity can be measured. The control of the myoelectric (prosthetic) hands or fingers is important for artificial hand or finger movement; however, the precise control of prosthetic hands or fingers remains a problem. Rehabilitation after multiple finger loss is challenging. Implants in finger prostheses after multiple finger loss offer better finger prosthesis retention. This article presents an overview of myoelectric control regarding finger prosthesis for patients with finger implants following multiple finger loss.

scholarly journals Understanding How Incentives Influence Motivation and Retention of Health Workers

2012 ◽  
pp. 1148-1163
Author(s):  
Posy Bidwell ◽  
Stephen Thomas ◽  
Silvia Stringhini
Keyword(s):  
Human Resources ◽  
Financial Incentives ◽  
Health Workers ◽  
Critical Factor ◽  
Research Needs ◽  
Middle Income ◽  
Middle Income Countries ◽  
Professional Ethos ◽  
Human Resources Strategies

A critical factor in addressing the human resources crisis in low and middle income countries (LMIC) is the ability to recruit, motivate, and retain health workers. Failure in this area is one of the main causes of decline in availability of services and quality of care. Various financial and non-financial incentives have been implemented and this chapter will explore available evidence to see whether they have influenced motivation. Additionally, Maslow’s hierarchy of needs is used to determine if there is a hierarchy of how incentives are valued. While Maslow’s model is a useful tool to classify themes of health worker needs, it would appear that workers are motivated without each level having to be fulfilled in turn. While financial incentives may help with retention, they can cause erosion of professional ethos, do not increase job satisfaction, or act as motivators to perform well. More research needs to be done in order to design more effective human resources strategies.

The Outcomes of Patients with Mental Ilness Undergoing Surgical Procedures

2021 ◽  
Vol 2 (1) ◽  
pp. 152-156
Author(s):  
Muhammad Rizqi Firyal
Keyword(s):  
Mental Illness ◽  
Quality Of Care ◽  
Surgical Procedures ◽  
Critical Factor ◽  
Medical Procedure ◽  
Mental Ilness ◽  
Comorbidity Status

Mental illness influences 3 % of the population and incorporates handicapping despondency and uneasiness, just as maniacal issues, such as bipolar and Schizophrenia. Patients with Schizophrenia were known to have a higher risk of complications during hospitalization. Quality of care has become the critical factor in reducing their potential mortality afterward. Patients with SMI were substantially less liable to have a significant medical procedure in the wake of controlling for age, other segment measures, and illness trouble. Patients of a similar age, sex, race, and comorbidity status having a previous genuine psychological instability passed on a significantly diminished probability of careful mediation. Clinical and careful hospitalizations for people with Schizophrenia had in some measure double the chances of a few kinds of unfriendly occasions than those for people without Schizophrenia. During the emergency clinic confirmation, these antagonistic occasions were related to poor clinical and financial results. Endeavors to decrease these unfriendly occasions should turn into an examination need.

Bindung von Kindern in familienrechtlichen Fragestellungen bei Gericht: Erkenntnisse und Missverständnisse

2021 ◽  
Vol 31 (2) ◽  
Author(s):  
Peter Zimmermann ◽  
Gottfried Spangler
Keyword(s):  
Attachment Security ◽  
Family Law ◽  
Attachment Research ◽  
Potential Sources ◽  
Attachment Development ◽  
Attachment To Mother ◽  
Quality Of Contact ◽  
Father Attachment

Psychological judicial expert reports for family law cases can include errors in the assessment of children’s attachments, their origins, their consequences, and the subsequent recommendation for the court. The article specifies potential sources of such errors and reviews several topics that are relevant for the evaluation and use of attachment assessments in psychological family law expert reports. These topics include attachment to mother and father, attachment hierarchy, the role of quantity and quality of contact to caregivers for attachment development and the use of results from attachment research on developmental consequences of attachment security and insecurity for psychological family law expert reports.

Evaluation of the impact from the discharge of treated sewage on the south-east Saronicos Gulf through mathematical water quality modelling

1999 ◽  
Vol 39 (8) ◽  
pp. 63-70
Author(s):  
C. Noutsopoulos ◽  
E. Gavalaki ◽  
A. Andreadakis
Keyword(s):  
Biological Treatment ◽  
Critical Factor ◽  
Field Measurements ◽  
Substantial Improvement ◽  
Disposal Site ◽  
The South ◽  
Treated Sewage ◽  
Limiting Nutrient ◽  
The Impact

The paper presents the results of a study of the impact caused by the discharge of treated sewage from the south-west Attiki area to the south-east coast of the Saronicos Gulf. The study involved the application of a eutrophication-dissolved oxygen model which, following validation on the basis of field measurements, was applied to predict the impact of three different biological treatment configurations, with and without nutrients removal, as well as three alternative disposal sites on the quality of the receiving waters. The simulation results show that nitrogen is the limiting nutrient and that its removal during treatment results in a substantial improvement of the quality of the recipient. The disposal site is a critical factor in the case of a biological treatment scheme exhibiting carbon removal, but it is of limited importance in the case of treatment systems with nitrogen removal.

scholarly journals Optimization of Organic Waste Composting in Diponegoro University with the Use of Pterocarpus indicus as Bio-activator

2019 ◽  
Vol 125 ◽  
pp. 07008 ◽  
Author(s):  
Fadel Iqbal Muhammad ◽  
Mochamad Arief Budihardjo
Keyword(s):  
Laboratory Test ◽  
Experimental Method ◽  
Organic Waste ◽  
Process Variations ◽  
Rice Flour ◽  
Organic N ◽  
Composting Process ◽  
Conventional Methods

Currently, Diponegoro University has been composting dry leaves with conventional methods through a facility called TPST. Even so, the processing which have been carried out has not been able to process all the organic waste in the location. Seeing these conditions, it is necessary to look for alternatives that are better and more economical to apply. Bioactivators are used from the leaves of Pterocarpus indicus which serve to accelerate the composting process. The bioactivators was made by making a solution of the leaves of Pterocarpus indicus which has been mashed, then mixed with molasses and rice flour and then left for 15 days. By using experimental method, the composting process is observed. This study aims to analyze the quality of compost with applicable standards. The quality of compost is assessed by looking at the pH, temperature, and macro nutrient percentage such as C-organic, N-total, and C / N ratio. During the composting process, variations in the stirring frequency are carried out, which is once every 2 days, 4 days and 7 days. After doing laboratory test, not all reactors meet the standards for pH, temperature, C-organic, N-total, and C / N ratio according to SNI 19-7030-2004.

High Quality Hydrothermal ZnO Crystals

1998 ◽  
Vol 537 ◽  
Author(s):  
M. Suscavage ◽  
M. Harris ◽  
D. Bliss ◽  
P. Yip ◽  
S.-Q. Wang ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Liquid Helium ◽  
Room Temperature ◽  
Surface Preparation ◽  
Critical Factor ◽  
High Quality ◽  
Rocking Curve ◽  
X Ray ◽  
Oxide Crystals

AbstractZinc Oxide crystals have historically been grown in hydrothermal autoclaves with a basic mineralizer; however, doubts have been raised about the quality of such crystals because they have often exhibited large x-ray rocking curve widths and low photoluminescence (PL) yield with large linewidths. Several ZnO crystals were grown hydrothermally and sliced parallel to the c-plane. This resulted in opposite surfaces (the C+ and C-) exhibiting pronounced chemical and mechanical differences. Different surface treatments were investigated and compared by PL both at room temperature and liquid helium temperatures, and by double axis X-ray rocking curve measurements. The high quality of hydrothermally-grown ZnO is substantiated by the narrow rocking curve widths and sharp PL peaks obtained. A critical factor in obtaining these results was found to be surface preparation.

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