scholarly journals Pengaruh Beda Potensial dan Waktu Kontak terhadap Penurunan Kadar COD dan TSS pada Limbah Batik menggunakan Metode Elektrokagulasi

2021 ◽  
Vol 10 (2) ◽  
pp. 63-69
Author(s):  
Belinda Liana Devy ◽  
Haryanto A. R.
Keyword(s):  
Negative Impact ◽  
Liquid Waste ◽  
Potential Difference ◽  
Optimal Conditions ◽  
Electrode Thickness ◽  
Cross Sectional ◽  
Electrode Distance ◽  
Reduction Efficiency ◽  
Aluminum Electrodes ◽  
A Current

Batik is one of Indonesia's original cultural heritage that must be preserved. However, the resulting liquid waste has a negative impact on the environment because it contains high levels of phosphate, surfactant, TSS, TDS, turbidity, BOD5 and COD contaminants. An effective method for dealing with batik waste is electrocoagulation, which is coagulation in the presence of an electric current using electrodes. This study treats batik waste by electrocoagulation using aluminum electrodes, which are operated at a current of 5 Ampere, electrode distance is 2 cm, electrode thickness is 0.1 cm, electrode cross-sectional area is 7x10 cm with a waste volume of 500 mL. The effect of potential difference treatment (3 volts, 4.5 volts, 7.5 volts, 9 volts, and 12 volts) and contact time (15 minutes, 20 minutes, 25 minutes, 30 minutes, and 35 minutes) on changes in COD and TSS levels were studied. Optimal conditions were obtained at a potential difference of 12 volts for 35 minutes with a COD reduction efficiency of 84.84% and 91% for TSS.

scholarly journals Pengaruh Kecepatan Pengadukan dan Jarak Elekroda terhadap Penurunan Kadar COD dan TSS pada Limbah Batik Menggunakan Metode Elektrokoagulasi

Syntax Idea ◽  
2021 ◽  
Vol 3 (11) ◽  
pp. 2386
Author(s):  
Hammami Fajar Kurniawan
Keyword(s):  
Textile Industry ◽  
Negative Impact ◽  
Liquid Waste ◽  
Electrode Spacing ◽  
Optimal Point ◽  
Cod Reduction ◽  
Electrode Distance ◽  
Optimal Value ◽  
Reduction Efficiency ◽  
Textile Factory

The existence of the textile industry, especially in batik production in the region, will certainly provide benefits to the area, because it can absorb labor from the area. However, where there are advantages, there will also be disadvantages, as is the case in this textile factory where the liquid waste produced has a negative impact on the environment. This liquid waste comes from the washing and coloring process which contains dyes, heavy metals, and high salt concentrations. This study examines batik waste from a textile factory using the electrocoagulation method with aluminum electrodes. Research on batik wastewater treatment has been carried out. The results of this study prove that the electrode distance and stirring speed variables affect the COD reduction efficiency and TSS reduction in batik waste. In general, the higher the stirring speed and the closer the electrode spacing, the higher the TSS and COD reduction efficiency. There is an optimal point for stirring speed, where the highest reduction in TSS and COD efficiency is obtained at a stirring speed of 200 rpm. From the variables studied, the optimal value for both variables was obtained, namely at the electrode distance of 1.6 and at a stirring speed of 200 rpm, with the result that the efficiency value obtained was a decrease in COD of 89.39% and a decrease in TSS of 90.45 %.

scholarly journals Electrochemical Measurement System for Chlorides in Drinking and Wastewater

2021 ◽  
Vol 5 (1) ◽  
pp. 46
Author(s):  
Diana A. Toriz-Gutiérrez ◽  
Humberto Ramírez-Gasca ◽  
Luis E. Cárdenas-Galindo ◽  
Eloisa Gallegos-Arellano
Keyword(s):  
Measurement System ◽  
Liquid Waste ◽  
Electrochemical Measurement ◽  
Sample Volume ◽  
Electrochemical Process ◽  
Chloride Ions ◽  
Small Sample ◽  
Potential Difference ◽  
Selective Electrode ◽  
A Current

This paper presents a system for the measurement of chlorides in drinking and wastewater, based on an electrochemical process using a selective electrode as a transducer, which was developed by this group. The measurement for the concentration is carried out by introducing the implemented electrode (considered as reference) in the sample that will be analyzed; then a current is passed producing a potential difference in the system. Different aqueous solutions of sodium chloride (NaCl) were used, ranging between 35 and 3546 µg of chloride ions (Cl−). As a data acquisition and monitoring system for the analysis, an ATmega 328P microcontroller was used as the main capture element for subsequent interpretation through graphics. The experimental results show that it was possible to detect a potential difference in the electrochemical measurement system that corresponded to 35 µg of chloride ions (Cl−), making clear the detection process and the selectivity of chloride ions. It is important to mention that with this measurement system and the applied methodology, results are obtained in real time using a small sample volume and without generate ng extra liquid waste, compared to the application of the traditional analytical titrimetric method. Finally, this chloride measurement system is inexpensive and can be used in drinking and wastewater measurements.

FAKTOR-FAKTOR YANG BERHUBUNGAN DENGAN KEJADIAN KEKURANGAN ENERGI KRONIS PADA IBU HAMIL

2017 ◽  
Vol 2 (3) ◽  
Author(s):  
Febriyeni Febriyeni
Keyword(s):  
Pregnant Women ◽  
Health Center ◽  
Negative Impact ◽  
Univariate Analysis ◽  
Good Condition ◽  
Health Centers ◽  
Bivariate Analysis ◽  
Cross Sectional ◽  
Energy Deficiency ◽  
Chronic Energy Deficiency

<pre>Chronic Energy Deficiency is a situation where the nutritional status someone is on the Less Good Condition. Among the 22 health centers in the district of Lima Puluh Kota, CED highest coverage at the health center are Banja Laweh Namely Case 17 (16.50%) of 103 pregnant mothers. Preliminary Survey of 10 pregnant women at health centers Banja Laweh, note 4 people (40%) of them suffered CED. Based on the findings of interviews stating Not pregnant women know the importance of the size upper arm circumference on Against her pregnancy, in addition to pregnant women consume no food Diversified, because lust Eating Less and Economics not sufficient. Objectives for review determine factors related to the occurrence of Chronic energy deficiency on pregnant women. Methods descriptive analytic with cross sectional approach. Data collection is done on Date in January-February 2017. CASE is a whole population of pregnant women in the region are working Health Center Banja Laweh Year 2017, amounted to 55 people, with sampling total sampling. Operating data analysis using univariate and bivariate statistical test Chi Square. Results of univariate analysis 87,3% of respondents experienced Genesis not CED, (60,0%) High Knowledge, (56,4%) Economy High, and 61,8% of Eating Well. Bivariate analysis known Relationship of Knowledge (p = 0.013 and OR = 12,000, Economics (p = 0.035 and OR = 10,000), and Diet (p = 0.019 and OR = 13,200) with the Genesis CED pregnant women. Can be concluded that the factors related to the occurrence of CED pregnant women is Science, Economics and the Diet. Expected to conduct monitoring of the health center and Supervision of pregnant women at risk Against The Genesis CED, so the negative impact of the CED can be addressed early on.</pre>

Understanding the Impact of Bullying in a Unionized U.S. Public Sector Workforce

2019 ◽  
Vol 68 (3) ◽  
pp. 139-153 ◽  
Author(s):  
Mazen El Ghaziri ◽  
Shellie Simons ◽  
Jane Lipscomb ◽  
Carla L. Storr ◽  
Kathleen McPhaul ◽  
...  
Keyword(s):  
Public Sector ◽  
Organizational Climate ◽  
Negative Impact ◽  
Multinomial Logistic Regression ◽  
Female Gender ◽  
Bargaining Unit ◽  
Organizational Level ◽  
Organizational Impact ◽  
Cross Sectional ◽  
The Impact

Background: Workplace Bullying (WPB) can have a tremendous, negative impact on the victims and the organization as a whole. The purpose of this study was to examine individual and organizational impact associated with exposure to bullying in a large U.S. unionized public sector workforce. Methods: A cross-sectional Web-based survey was conducted among 16,492 U.S. state government workers. Survey domains included demographics, negative acts (NAs) and bullying, supportiveness of the organizational climate, and individual and organizational impacts of bullying. Multinomial logistic regression was used to assess the impact among respondents who reported exposure to bullying. Findings: A total of 72% participants responded to the survey (n = 11,874), with 43.7% (n = 5,181) reporting exposure to NAs and bullying. A total of 40% (n = 4,711) participants who experienced WPB reported individual impact(s) while 42% ( n = 4,969) reported organization impact(s). Regular NA was associated with high individual impact (negatively impacted them personally; odds ratio [OR] = 5.03) when controlling for other covariates including: female gender (OR =1.89) and job tenure of 6 to 10 years (OR = 1.95); working in a supportive organizational climate and membership in a supportive bargaining unit were protective of high impact (OR = 0.04 and OR = 0.59, respectively). High organizational impact (transferring to another position) was associated with regular NA and bullying (OR = 16.26), female gender (OR = 1.55), providing health care and field service (OR = 1.68), and protective effect of organizational climate (OR = 0.39). We found a dose-response relationship between bullying and both individual and organizational-level impact. Conclusion/Application to Practice: Understanding the impacts of WPB should serve to motivate more workplaces and unions to implement effective interventions to ameliorate the problem by enhancing the organizational climate, as well as management and employee training on the nature of WPB and guidance on reporting.

scholarly journals Risk Factors, Pattern and Outcome of Motorcycle-associated Head Injury in Sokoto: An Analysis of 184 Cases

2021 ◽  
Author(s):  
Henry Olayere Obanife ◽  
Nasiru Jinjiri Ismail ◽  
Ali Lasseini ◽  
Bello B. Shehu ◽  
Ega J. Otorkpa
Keyword(s):  
Developing Countries ◽  
Head Injury ◽  
Road Traffic ◽  
Negative Impact ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Female Ratio ◽  
Incidence And Mortality ◽  
Male Female Ratio ◽  
Significant Negative Impact

Abstract Background Road traffic accident (RTA) is the eighth leading cause of death worldwide. Motorcycle-associated head injury is the leading cause of road traffic associated morbidity and mortality in developing countries. Even though the incidence and mortality of head injury from motor cycle crash is on the increase in developing countries, especially in the African continent, most of the studies published in the literature on this subject matter took place in the developed Western countries. Methods This is a retrospective cross-sectional study of data from patients managed in our institution between December 2014 and November 2016. Results One hundred and eighty-four patients were analyzed. None of the patients used safety helmet for protection. The mean age was 27.6 ± 17.2 years with male female ratio of 6.7:1. Lone crash by cyclists and collisions accounted for 66.8% and 33.1% of the cases, respectively. Passengers and riders comprised 75% of the patients, while 25% were vulnerable pedestrians. The most frequently abused substance by the patients was tramadol (65.52%). Severe head injury and pupillary abnormality were found in 23.9% and 45.5% of the patients, respectively. Cranial CT scan showed abnormalities in 40.2% of the patients. Surgery was done in 28.3% of the patients with mortality rate of 20.7%. Conclusions The use of motorcycle as a mean of transportation has caused significant negative impact on the society. Young people, who constitute the workforce, are majorly affected, and this invariably leads to a serious economic burden on the concerned families and communities.

scholarly journals 764 Human Factors in Operative Theatres During the Covid-19 Pandemic: A Cross-sectional Analysis of Operating Theatre Staff Experiences in a Regional Centre

2021 ◽  
Vol 108 (Supplement_2) ◽  
Author(s):  
L E Murchison ◽  
R Anbarasan ◽  
A Mathur ◽  
M Kulkarni
Keyword(s):  
Human Factors ◽  
Online Survey ◽  
Situational Awareness ◽  
Negative Impact ◽  
High Stress ◽  
Operating Theatre ◽  
Free Text ◽  
Cross Sectional ◽  
Chi Squared ◽  
Theatre Staff

Abstract Introduction In the already high-risk, high-stress environment of the operating theatre, operating during Covid-19 has brought its own unique challenges. Communication, teamwork and anxiety related new operating practices secondary to Covid-19 are hypothesised to have a negative impact on patient care. Method We conducted a single-centre online survey of operating theatre staff from 22nd June–6th July 2020. Respondents completed 18 human factors questions related to COVID-19 precautions including communication, teamwork, situational awareness, decision making, stress, fatigue, work environment and organisational culture. Questions consisted of yes/no responses, multiple choice and Likert items. Kruskall-Wallis tests, Chi-Squared, Mann Whitney U tests, Spearman’s correlation coefficient, lambda and Cramer’s V tests were used. Free-text responses were also reviewed. Results 116 theatre staff responded. Visual (90.5%), hearing/ understanding (96.6%) difficulties, feeling faint/lightheaded (66.4%) and stress (47.8%) were reported. Decreased situational awareness was reported by 71.5% and correlated with visors (r = 0.27 and p = 0.03) and FFP2/3 mask usage (r = 0.29 and p = 0.01). Reduced efficiency of theatre teams was reported by 75% of respondents and 21.5% felt patient safety was at greater risk due to Covid-19 precautions in theatre. Conclusions Organisational adjustments are required, and research focused on development of fit-for-purpose personal protective equipment (PPE).

scholarly journals Mental Health, Information and Being Connected: Qualitative Experiences of Social Media Use during the COVID-19 Pandemic from a Trans-National Sample

Healthcare ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 735
Author(s):  
Schoultz Mariyana ◽  
Leung Janni ◽  
Bonsaksen Tore ◽  
Ruffolo Mary ◽  
Thygesen Hilde ◽  
...  
Keyword(s):  
Mental Health ◽  
Social Media ◽  
Health Information ◽  
Online Survey ◽  
Negative Impact ◽  
National Study ◽  
Free Text ◽  
Cross Sectional ◽  
Mental Health Information ◽  
The Uk

Background: Due to the COVID-19 pandemic and the strict national policies regarding social distancing behavior in Europe, America and Australia, people became reliant on social media as a means for gathering information and as a tool for staying connected to family, friends and work. This is the first trans-national study exploring the qualitative experiences and challenges of using social media while in lockdown or shelter-in-place during the current pandemic. Methods: This study was part of a wider cross-sectional online survey conducted in Norway, the UK, USA and Australia during April/May 2020. The manuscript reports on the qualitative free-text component of the study asking about the challenges of social media users during the COVID-19 pandemic in the UK, USA and Australia. A total of 1991 responses were included in the analysis. Thematic analysis was conducted independently by two researchers. Results: Three overarching themes identified were: Emotional/Mental Health, Information and Being Connected. Participants experienced that using social media during the pandemic amplified anxiety, depression, fear, panic, anger, frustration and loneliness. They felt that there was information overload and social media was full of misleading or polarized opinions which were difficult to switch off. Nonetheless, participants also thought that there was an urge for connection and learning, which was positive and stressful at the same time. Conclusion: Using social media while in a shelter-in-place or lockdown could have a negative impact on the emotional and mental health of some of the population. To support policy and practice in strengthening mental health care in the community, social media could be used to deliver practical advice on coping and stress management. Communication with the public should be strengthened by unambiguous and clear messages and clear communication pathways. We should be looking at alternative ways of staying connected.

scholarly journals P38 COVID-19 impact on Surgical Training And Recovery Planning (COVID-STAR) Survey

BJS Open ◽  
2021 ◽  
Vol 5 (Supplement_1) ◽  
Author(s):  
◽  
Joshua Clements
Keyword(s):  
Surgical Training ◽  
Negative Impact ◽  
Healthcare Delivery ◽  
Cross Sectional Study ◽  
Surgical Trainee ◽  
Surgical Specialty ◽  
Cross Sectional ◽  
Training Time ◽  
Surgical Trainees ◽  
And Training

Abstract Background The COVID-19 pandemic has resulted in dynamic changes to healthcare delivery. Surgery as a specialty has been significantly affected and with that the delivery of surgical training. Method This national, collaborative, cross sectional study comprising 13 surgical trainee associations distributed a pan surgical specialty survey on the COVID-19 impact on surgical training over a 4-week period (11th May - 8th June 2020). The survey was voluntary and open to medical students and surgical trainees of all specialties and training grades. All aspects of training were qualitatively assessed. This study was reported according to STROBE guidelines. Results 810 completed responses were analysed. (M401: F 390) with representation from all deaneries and training grades. 41% of respondents (n = 301) were redeployed with 74% (n = 223) redeployed &gt; 4 weeks. Complete loss of training was reported in elective operating (69.5% n = 474), outpatient activity (67.3%, n = 457), Elective endoscopy (69.5% n = 246) with &gt; 50% reduction in training time reported in emergency operating (48%, n = 326) and completion of work-based assessments (WBA) (46%, n = 309). 81% (n = 551) reported course cancellations and departmental and regional teaching programmes were cancelled without rescheduling in 58% and 60% of cases respectively. A perceived lack of Elective operative exposure and completions of WBA’s were the primary reported factor affecting potential training progression. Overall, &gt; 50% of trainees (n = 377) felt they would not meet the competencies required for that training period. Conclusion This study has demonstrated a perceived negative impact on numerous aspects of surgical training affecting all training specialties and grades.

scholarly journals Physical Activity and Diet Quality Modify the Association between Comorbidity and Disability among Stroke Patients

Nutrients ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 1641
Author(s):  
Lien T. K. Nguyen ◽  
Binh N. Do ◽  
Dinh N. Vu ◽  
Khue M. Pham ◽  
Manh-Tan Vu ◽  
...  
Keyword(s):  
Physical Activity ◽  
Diet Quality ◽  
Negative Impact ◽  
Cross Sectional Study ◽  
World Health ◽  
Short Version ◽  
Linear Regression Models ◽  
Stroke Patients ◽  
Disability Score ◽  
Cross Sectional

Background: Comorbidity is common and causes poor stroke outcomes. We aimed to examine the modifying impacts of physical activity (PA) and diet quality on the association between comorbidity and disability in stroke patients. Methods: A cross-sectional study was conducted on 951 stable stroke patients in Vietnam from December 2019 to December 2020. The survey questionnaires were administered to assess patients’ characteristics, clinical parameters (e.g., Charlson Comorbidity Index items), health-related behaviors (e.g., PA using the International Physical Activity Questionnaire- short version), health literacy, diet quality (using the Dietary Approaches to Stop Hypertension Quality (DASH-Q) questionnaire), and disability (using the World Health Organization Disability Assessment Schedule II (WHODAS II)). Linear regression models were used to analyze the associations and interactions. Results: The proportion of comorbidity was 49.9% (475/951). The scores of DASH-Q and WHODAS II were 29.2 ± 11.8, 32.3 ± 13.5, respectively. Patients with comorbidity had a higher score of disability (regression coefficient, B, 8.24; 95% confidence interval, 95%CI, 6.66, 9.83; p < 0.001) as compared with those without comorbidity. Patients with comorbidity and higher tertiles of PA (B, −4.65 to −5.48; p < 0.05), and a higher DASH-Q score (B, −0.32; p < 0.001) had a lower disability score, as compared with those without comorbidity and the lowest tertile of PA, and the lowest score of DASH-Q, respectively. Conclusions: Physical activity and diet quality significantly modified the negative impact of comorbidity on disability in stroke patients. Strategic approaches are required to promote physical activity and healthy diet which further improve stroke rehabilitation outcomes.

scholarly journals The Perceived Impact of The First UK Covid-19 Lockdown on Companion Animal Welfare and Behaviour: A Mixed-Method Study of Associations with Owner Mental Health

2021 ◽  
Vol 18 (11) ◽  
pp. 6171
Author(s):  
Emily Shoesmith ◽  
Luciana Santos de Assis ◽  
Lion Shahab ◽  
Elena Ratschen ◽  
Paul Toner ◽  
...  
Keyword(s):  
Mental Health ◽  
Animal Welfare ◽  
Online Survey ◽  
Negative Impact ◽  
Companion Animals ◽  
Principal Component ◽  
Companion Animal ◽  
Free Text ◽  
Cross Sectional ◽  
Human Animal

Background: Companion animals may be a positive presence for their owners during the Covid-19 pandemic. However, the welfare of a companion animal is strongly influenced by the behaviour of their owners, as well as their physical and social environment. We aimed to investigate the reported changes in companion animal welfare and behaviour and to examine the association between these changes and companion animal owners’ mental health. Methods: A cross-sectional online survey of UK residents over 18 years of age was conducted between April and June 2020 (n = 5926). The questionnaire included validated, bespoke items measuring outcomes related to mental health, human-animal bonds and reported changes in animal welfare and behaviour. The final item of the survey invited open-ended free-text responses, allowing participants to describe experiences associated with human-animal relationships during the first UK lockdown phase. Results: Animal owners made up 89.8% of the sample (n = 5323), of whom 67.3% reported changes in their animal’s welfare and behaviour during the first lockdown phase (n = 3583). These reported changes were reduced to a positive (0–7) and negative (0–5) welfare scale, following principal component analysis (PCA) of 17 items. Participants reported more positive changes for cats, whereas more negative changes were reported for dogs. Thematic analysis identified three main themes relating to the positive and negative impact on companion animals of the Covid-19 pandemic. Generalised linear models indicated that companion animal owners with poorer mental health scores pre-lockdown reported fewer negative changes in animal welfare and behaviour. However, companion animal owners with poorer mental health scores since lockdown reported more changes, both positive and negative, in animal welfare and behaviour. Conclusion: Our findings extend previous insights into perceived welfare and behaviour changes on a very limited range of species to a wider a range of companion animals. Owner mental health status has a clear, albeit small, effect on companion animal welfare and behaviour.

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