scholarly journals Microsurgery: A 10-Year Experience with Loupe Magnification

2020 ◽  
Vol 05 (02) ◽  
pp. e90-e94
Author(s):  
Ferdinand Wanjala Nangole ◽  
Stanley Ominde Khainga
Keyword(s):  
Surgical Procedures ◽  
Free Flaps ◽  
Cost Effective ◽  
Prospective Audit ◽  
National Hospital ◽  
Reconstructive Procedures ◽  
The Past ◽  
Alternative Means ◽  
Age Range ◽  
Loupe Magnification

Abstract Background Microsurgical procedures are still rare in many countries especially in resource-constrained countries. Among reasons for this is the unavailability of operating microscopes that are costly. Operating loupes are considered inferior to the microscope and are most discouraged for many microsurgical procedures. We audit patients operated under loupes for the past 10 years and present our findings. Patients and Methods This was a prospective audit of patients who underwent microsurgical reconstructive procedures in the plastic surgery unit at Kenyatta National Hospital between January 2009 and December 2019. Results A total of 352 patients with 360 procedures were done over a 10-year period. The age range for the patients was 5 to 90 years. Free flaps accounted for 78% of the surgical procedures (n = 298) followed by nerve repairs 8.8% (n = 32) and reimplantation surgeries 8.5% (n = 30). The overall success rate for free flaps was 93.3% with reimplantations of 77%. Conclusion Microsurgical reconstructive procedures as demonstrated in this study can safely be done with loupes. Loupes provide an alternative means of magnification that is cost effective and cheaper. In good hands, good surgical outcomes can be achieved that are comparable to the operating microscopes.

Regulatory and sustainability initiatives lead to improved polyaminopolyamide epichlorohydrin (PAE) wet-strength resins and paper products

TAPPI Journal ◽  
2018 ◽  
Vol 17 (09) ◽  
pp. 519-532 ◽  
Author(s):  
Mark Crisp ◽  
Richard Riehle
Keyword(s):  
Health And Safety ◽  
Cost Effective ◽  
Worker Safety ◽  
Regulatory Requirements ◽  
Wet Strength ◽  
The Past ◽  
Consumer Safety ◽  
Federal Institute ◽  
Sustainability Initiatives ◽  
The Impact

Polyaminopolyamide-epichlorohydrin (PAE) resins are the predominant commercial products used to manufacture wet-strengthened paper products for grades requiring wet-strength permanence. Since their development in the late 1950s, the first generation (G1) resins have proven to be one of the most cost-effective technologies available to provide wet strength to paper. Throughout the past three decades, regulatory directives and sustainability initiatives from various organizations have driven the development of cleaner and safer PAE resins and paper products. Early efforts in this area focused on improving worker safety and reducing the impact of PAE resins on the environment. These efforts led to the development of resins containing significantly reduced levels of 1,3-dichloro-2-propanol (1,3-DCP) and 3-monochloropropane-1,2-diol (3-MCPD), potentially carcinogenic byproducts formed during the manufacturing process of PAE resins. As the levels of these byproducts decreased, the environmental, health, and safety (EH&S) profile of PAE resins and paper products improved. Recent initiatives from major retailers are focusing on product ingredient transparency and quality, thus encouraging the development of safer product formulations while maintaining performance. PAE resin research over the past 20 years has been directed toward regulatory requirements to improve consumer safety and minimize exposure to potentially carcinogenic materials found in various paper products. One of the best known regulatory requirements is the recommendations of the German Federal Institute for Risk Assessment (BfR), which defines the levels of 1,3-DCP and 3-MCPD that can be extracted by water from various food contact grades of paper. These criteria led to the development of third generation (G3) products that contain very low levels of 1,3-DCP (typically <10 parts per million in the as-received/delivered resin). This paper outlines the PAE resin chemical contributors to adsorbable organic halogens and 3-MCPD in paper and provides recommendations for the use of each PAE resin product generation (G1, G1.5, G2, G2.5, and G3).

A recent overview on the porphyrin-based π-extended small molecules as donors and acceptors for high-performance organic solar cells

2021 ◽  
Author(s):  
Venkatesh Piradi ◽  
Feng Yan ◽  
Xunjin Zhu ◽  
Wai-Yeung Raymond Wong
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Small Molecules ◽  
Organic Solar Cells ◽  
High Performance ◽  
Cost Effective ◽  
Effective Alternative ◽  
The Past ◽  
Cost Effective Alternative ◽  
Silicon Based

Organic solar cells (OSCs) have been considered as a promising cost-effective alternative to silicon-based solar cell counterparts due to their lightweight, mechanical flexibility, and easy fabrication features. Over the past...

scholarly journals Introduction to the Special Issue on New Longitudinal Data for Retirement Analysis and Policy

2021 ◽  
pp. 1-5
Author(s):  
Marco Angrisani ◽  
Anya Samek ◽  
Arie Kapteyn
Keyword(s):  
Big Data ◽  
Academic Research ◽  
Cost Effective ◽  
Research Data ◽  
Data Sources ◽  
Special Issue ◽  
Administrative Records ◽  
The Past ◽  
Survey Questionnaires ◽  
Internet Panels

The number of data sources available for academic research on retirement economics and policy has increased rapidly in the past two decades. Data quality and comparability across studies have also improved considerably, with survey questionnaires progressively converging towards common ways of eliciting the same measurable concepts. Probability-based Internet panels have become a more accepted and recognized tool to obtain research data, allowing for fast, flexible, and cost-effective data collection compared to more traditional modes such as in-person and phone interviews. In an era of big data, academic research has also increasingly been able to access administrative records (e.g., Kostøl and Mogstad, 2014; Cesarini et al., 2016), private-sector financial records (e.g., Gelman et al., 2014), and administrative data married with surveys (Ameriks et al., 2020), to answer questions that could not be successfully tackled otherwise.

scholarly journals Free Flaps in a Resource Constrained Environment: A Five-Year Experience—Outcomes and Lessons Learned

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Wanjala F. Nangole ◽  
Stanley Khainga ◽  
Joyce Aswani ◽  
Loise Kahoro ◽  
Adelaine Vilembwa
Keyword(s):  
Free Flaps ◽  
Developed Countries ◽  
Tertiary Hospital ◽  
Lessons Learned ◽  
Resource Constrained ◽  
Free Flap Surgery ◽  
Flap Monitoring ◽  
The Many ◽  
A Prospective Study ◽  
Age Range

Introduction. Free flap surgery is a routine procedure in many developed countries with good surgical outcomes. In many developing countries, however, these services are not available. In this paper, we audit free flaps done in a resource constrained hospital in Kenya. Objective. This is a five-year audit of free flaps done in a tertiary hospital in Kenya, between 2009 and 2014. Materials and Methods. This was a prospective study of patients operated on with free flaps between 2009 and 2014. Results. A total of one hundred and thirty-two free flaps in one hundred and twenty patients were performed during the five-year duration. The age range was eight to seventy-two years with a mean of 47.2. All the flaps were done under loupe magnification. The overall flap success rate was eighty-nine percent. Conclusion. Despite the many limitations, free flaps in our setup were successful in the majority of patients operated on. Flap salvage was noted to be low due to infrequent flap monitoring as well as unavailability of theatre space. One therefore has to be meticulous during surgery to reduce any possibilities of reexploration.

scholarly journals Fatherhood in Men Who Underwent Bariatric Surgery in Campina Grande Paraíba, Brazil

2021 ◽  
Vol 2 (4) ◽  
pp. 01-02
Author(s):  
Carlos Teixeira Brandt ◽  
Camilla Ribeiro Lima de Farias ◽  
Kalyanne Mayara Luna Alves
Keyword(s):  
Bariatric Surgery ◽  
Surgical Procedures ◽  
Sexual Functioning ◽  
Scientific Literature ◽  
Sperm Quality ◽  
Life Quality ◽  
Total Sample ◽  
The Past ◽  
Normal Offspring ◽  
Post Bariatric Surgery

Sexual functioning is an important, yet often overlooked, aspect of life quality for many individuals with obesity, especially regarding to man. Fertility and sperm quality are even less explored in the scientific literature. To the best of our knowledge, there is no report of man being a father after bariatric surgery. Here, we report a four men recruited from a prospective cohort of individuals, from both gender, who underwent bariatric surgery in the past three years. The total sample was 192 (146 women – 76.0% and 46 men – 24.0%). From the 46 men, 4 (8.7%) became father of six normal offspring. The ages of the men were respectively: 34; 38; 41; and 43 years of age. These patients were married. The post bariatric surgery pregnancies, from the samespouses before surgical procedures, were without any abnormalities and the newborns presented no congenital anomalies. These individuals referred increased sexual desire after surgery and improvement of erectile function. This case seriesreported highlights the contribution of bariatric surgery in the sexuality, fertility and fatherhood of obese man.

scholarly journals (GTG)5-PCR Mediated Molecular Typing of Zoonotic Bacteria

2021 ◽  
Vol 11 (2) ◽  
pp. 279-283
Author(s):  
Daryoush Babazadeh ◽  
Reza Ranjbar
Keyword(s):  
Molecular Typing ◽  
Cost Effective ◽  
Present Review ◽  
Published Data ◽  
Bacterial Isolates ◽  
The Past ◽  
Virulent Strains ◽  
Pcr Method ◽  
Zoonotic Bacteria

The present review aimed to reveal the role of (GTG)5-PCR microbial typing in indicating the routes and source of infections, investigate the outbreaks and genotypes of clinical strains, as well as finding virulent strains and epidemiology of bacterial isolates. All available and published data in Google scholar, PubMed, ResearchGate, and Science Direct during the past two decades that used the (GTG)5-PCR method for genotyping the bacterial isolates were included in the current study. The findings have indicated that (GTG)5-PCR can be recommended as a possible, cost-effective, fast, and easy tool for molecular typing of bacterial isolates.

scholarly journals Study on Relationship Between Age and Coffee Preference: Application to Specialty Coffee Association Brewing Control Chart

2019 ◽  
Vol 35 (2) ◽  
pp. 131-139
Author(s):  
Joy Xue
Keyword(s):  
Control Chart ◽  
Total Dissolved Solids ◽  
Taste Preferences ◽  
Current Standard ◽  
Standard Data ◽  
The Past ◽  
Specialty Coffee ◽  
Age Range ◽  
Larger Sample ◽  
Coffee Brewing

The Specialty Coffee Association Brewing Control chart has been used for the past 50 years, and is intended to assist the coffee brewer by stating the brew ratio and TDS (total dissolved solids) value needed to brew an “ideal” cup of coffee. Since coffee is a common and popular beverage that is consumed among populations ranging from children to elders, the objective of this study was to find out whether taste preferences in coffee vary based on age and whether these preferences match the current brewing control chart standard. Data collected in this study was based on a taste test with 32 total participants selected randomly. Of these participants, 10 fell into the 10-19 years old age range, 5 in the 20-29 range, 4 in the 30-39 range, 7 in the 40-49 range, and 6 in the 50-59 range. Based on the data from these respondents, no obvious trend between age range and coffee preference was observed; but, this is subject to change with larger sample sizes.Overall taste preferences, however, do generally fit the current standard ideal range on the coffee brewing control chart.

Preventive Medicine

2016 ◽  
pp. 365-374
Author(s):  
Amy T. Wang ◽  
Karen F. Mauck
Keyword(s):  
Surgical Procedures ◽  
Preventive Medicine ◽  
The Past ◽  
Risk Of Mortality ◽  
American Society ◽  
American Society Of Anesthesiologists ◽  
Complex Surgical Procedures ◽  
Overall Mortality ◽  
Overall Risk

Mortality associated with anesthesia and surgery has decreased markedly in the past several decades. Today the overall mortality is 1:250,000 even though more complex surgical procedures are performed on sicker patients. The American Society of Anesthesiologists classification, with broadly defined categories, is used to estimate overall risk of mortality within 48 hours postoperatively.

scholarly journals Enhanced interlayer trapping of Pb(II) ions within kaolinite layers: intercalation, characterization, and sorption studies

2019 ◽  
Vol 27 (2) ◽  
pp. 1870-1887 ◽  
Author(s):  
Ali Maged ◽  
Ismael Sayed Ismael ◽  
Sherif Kharbish ◽  
Binoy Sarkar ◽  
Sirpa Peräniemi ◽  
...  
Keyword(s):  
Interlayer Space ◽  
Fixed Bed ◽  
Potassium Acetate ◽  
Cost Effective ◽  
Continuous Mode ◽  
Uptake Capacity ◽  
Column Tests ◽  
Fixed Bed Column ◽  
The Past ◽  
The World

AbstractLead (Pb(II)) pollution in water poses a serious threat to human health in many parts of the world. In the past decades, research has been aimed at developing efficient and cost-effective methods to address the problem. In this study, dimethyl sulfoxide (DMSO) and potassium acetate (K-Ac) intercalated kaolinite complexes were synthesized and subsequently utilized for Pb(II) removal from water. The intercalation of kaolinite with DMSO was found to be useful for expanding the interlayer space of the clay mineral from 0.72 to 1.12 nm. Kaolinite intercalation with K-Ac (KDK) increased the interlayer space from 1.12 to 1.43 nm. The surface area of KDK was found to be more than threefold higher as compared to natural kaolinite (NK). Batch experimental results revealed that the maximum Pb(II) uptake capacity of KDK was 46.45 mg g−1 which was higher than the capacity of NK (15.52 mg g−1). Reusability studies showed that KDK could be reused for 5 cycles without substantially losing its adsorption capacity. Furthermore, fixed-bed column tests confirmed the suitability of KDK in continuous mode for Pb(II) removal. Successful application of intercalated kaolinite for Pb(II) adsorption in batch and column modes suggests its application in water treatment (especially removal of divalent metals).

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