P-Removal in Completely Mixed Systems

1985 ◽  
Vol 17 (11-12) ◽  
pp. 325-326 ◽  
Author(s):  
H J. G. W. Donker ◽  
P. Opic ◽  
H. P. de Vries
Keyword(s):  
Mixed System ◽  
Domestic Waste ◽  
Recirculation Flow ◽  
Start Up ◽  
Significant Difference ◽  
Aerobic Reactor ◽  
The Difference ◽  
Positive Effect ◽  
Mixed Systems ◽  
P Removal

Ca. 60 % of the Dutch activated sludge plants consist of completely mixed systems, experiments have been carried out in completely mixed pilot plants to study the biological P-removal. The research was carried out in two pilot plants. The pilot plants consisted of: anaerobic reactor, anoxic reactor, aerobic reactor and a clarifier. All the reactors were completely mixed. Both plants were fed with settled domestic waste water at a sludge loading of 400 and 250 g COD/kg sludge.day respectively. The results are given below:sludge loading (g COD/kg sludge.day)400400250ratio Anaerobic : Anoxic : Aerobic1: 1:2,71:1:4,11:1:2,7P-removal (%)802875N-removal (%)505065COD-removal (%)858585 It has been shown that there is no significant difference between the results at the two different sludge loadings. Remarkable is the difference between the ratio 1:1:2,7 in combination with the internal recirculation flow anoxic-anaerobic of 160 % and the ratio 1:1:4,1 with a recirculation flow of 30 %. During the start-up at a sludge loading of 250 g COD/kg sludge.day and an internal recirculation flow of 30 %, bulking sludge developed almost immediately. The Premoval was completely disturbed. Increasing the internal recirculation flow to 160% had a positive effect on settling properties and P-removal. This investigation has pointed out that a completely mixed system is suitable for biological P-removal, without negatively affecting the nitrification. Important factors in the process are the ratio anaerobic:anoxic:aerobic and the recirculation flows.

scholarly journals Effects of oral care provided with three different tools in patients receiving mechanical ventilationMekanik ventilatöre bağlı hastalarda üç farklı araçla verilen ağız bakımının etkisi

2017 ◽  
Vol 14 (4) ◽  
pp. 4507 ◽  
Author(s):  
Hüsna Özveren ◽  
Hülya Uçar
Keyword(s):  
Mechanical Ventilation ◽  
Oral Mucosa ◽  
Oral Care ◽  
Inclusion Criteria ◽  
Oral Assessment ◽  
Significant Difference ◽  
Quasi Experimental ◽  
The Difference ◽  
Positive Effect

Aim: This study was conducted to investigate the effects of oral care provided suction toothbrush, suction sponge stick and sponge stick in patients receiving mechanical ventilation.Material and method: The study was conducted as a quasi-experimental study. Thirty patients who were over 18 years of age and receiving mechanical ventilation comprised the study sample. The patients who met the inclusion criteria were divided into three groups: the suction toothbrush group, the suction sponge stick group and the sponge stick group. The patients in the three groups were provided oral care by the researcher twice a day at 12-hour intervals for 5 days. To collect the data, the socio-demographic characteristics form, the patient follow-up form, the Oral Assessment Follow-up Form and the microbiological follow-up form were used.Results: The comparison of the patients’ mean scores obtained from the oral assessment scale on the 1st and 6th days in terms of oral care tools revealed a statistically significant difference (p <0.05). The difference was due to the scores of the suction-toothbrush group.Conclusion: In this study, it was determined that oral care performed regularly on the basis of a standard protocol had a positive effect on the oral mucosa health, and that the suction toothbrush was particularly the most effective oral care tool for the protection and maintenance of the oral mucosa health.Extended English abstract is in the end of Full Text PDF (TURKISH) file. ÖzetAmaç: Araştırma mekanik ventilatöre bağlı hastalarda sakşınlı diş fırçası, sakşınlı süngerli çubuk ve süngerli çubukla verilen ağız bakımının etkisini incelemek amacıyla yapılmıştır.Materyal Metot: Araştırma, yarı deneysel olarak yapılmıştır. Araştırmanın örneklemini, 18 yaşından büyük ve mekanik ventilatöre bağlı olan 30 hasta oluşturmuştur. Örneklem kriterlerine uyan hastalar sakşınlı diş fırçası, sakşınlı süngerli çubuk, süngerli çubuk olmak üzere üç gruba ayrılmıştır. Araştırmacı tarafından, her üç grupta yer alan hastalara 5 gün boyunca günde 2 kez 12 saat aralıklarla ağız bakımı verilmiştir. Verilerin toplanmasında; hastalara ait tanıtıcı özellikler formu, hasta izlem formu, ağız değerlendirme izlem formu ve mikrobiyolojik izlem formu kullanılmıştır. Bulgular: Hastaların ağız bakım araçlarına göre 1. gün ve 6. gün ağız değerlendirme ölçeği puan ortalamaları karşılaştırıldığında aradaki fark istatistiksel olarak önemli bulunmuştur (p<0.05). Farklılığın sakşınlı diş fırçası grubundan kaynaklandığı saptanmıştır.Sonuç: Bu çalışmada, standart bir protokolle yapılan düzenli ağız bakımının ağız mukoza sağlığını olumlu etkilediği ayrıca sakşınlı diş fırçasının ağız sağlığının korunması ve sürdürülmesinde en etkili ağız bakım aracı olduğu belirlenmiştir.

α-Tocopherol as an antiretroviral therapy supplement for HIV-1-infected patients for increased lymphocyte viability

2005 ◽  
Vol 43 (4) ◽  
Author(s):  
Odilon de Souza Júnior ◽  
Arício Treitinger ◽  
Giovana Lotici Baggio ◽  
Cleonice Michelon ◽  
Júlio Cesar Verdi ◽  
...  
Keyword(s):  
Drug Interaction ◽  
Treatment Time ◽  
Metabolic Clearance ◽  
Cellular Viability ◽  
Additional Risk ◽  
Significant Difference ◽  
The Difference ◽  
Positive Effect ◽  
Hiv 1 ◽  
Over Time

AbstractThe aim of our study was to evaluate the benefits of supplementation with 800mg/day of α-tocopherol with regard to cellular viability in HIV-1 seropositive patients undergoing anti-retroviral therapy. A total of 29 patients participated in the study, of whom 14 were given the supplement and 15 a placebo. The analyses were carried out before treatment commenced and after 60, 120 and 180days. The plasma levels ofHIV-1 RNA showed a significant decrease as a consequence of treatment time in the groups studied (p=0.0001), although the difference between the treatments over time was not verified (p=0.7343). The percentage of viable lymphocytes showed a significant increase as a consequence of treatment time in both groups studied (p=0.0002) and a significant difference between the treatments over time (p=0.0472). The percentage of lymphocytes in apoptosis showed a significant reduction over time (p=0.0003), as well as a significant difference between the treatments over time (p=0.0321). The significant increase in cellular viability indicates that supplementation with α-tocopherol offers an additional positive effect on cellular preservation in HIV-1 individuals undergoing anti-retroviral therapy; however, it represents an additional risk of anti-retroviral therapeutic failure, possibly due to drug-drug interaction involving up-regulation of metabolic clearance.

Are Feminine or Masculine Supervisors Leading In Same Way And Have Same Effect on Subordinates’ Performance?

2021 ◽  
pp. 097226292110503
Author(s):  
Sakshi Sharma ◽  
Manju Nair
Keyword(s):  
Leadership Style ◽  
Work Performance ◽  
Female Leaders ◽  
Multi Stage ◽  
Leadership Behaviour ◽  
Significant Difference ◽  
The Difference ◽  
And Performance ◽  
Subjective Evidence ◽  
Positive Effect

Catalyst study stated that female leaders suggestively can exhibit better leadership behaviour than male and can have more positive effect on their subordinate’s work psychology and performance. But these proclamations, grounded mostly on inadequate research verdicts and subjective evidence, continue empirically unverified in Asian countries. The experiential study is directed to compare whether female managers differ in their leadership style from male managers in bank. Added to that, study led to recognize and compare the difference in subordinate’s work performance behaviour due to the supervisor’s gender. Through multi-stage sampling method, 364 male and 58 female supervisors were examined based on structured questionnaire proposing two hypothetical consent-attainment status quo. Results exhibited and confirmed the significant difference among supervisor’s gender in their leadership style. Noteworthy variances were revealed in subordinates’ work behaviour because of their manager’s gender. Though the effects varied for diverse dimensions of managerial behaviour and employees conduct. Hypothesis verified that female supervisors are more transformational and transactional in style than male. Furthermore, female leaders were rated more significantly positive on subordinates’ task and contextual performance than male. Research entitled that Indian female supervisor with transformational and transactional style could be more influential to induce subordinates work behaviour and performance in banks. It is imperious to analyse leader’s behaviour in context to their gender, as female leaders play a substantial role in organization growth and performance.

scholarly journals Examining the Influence of University Teachers’ Qualification and Experience on Students’ Academic Achievement in Mathematics

2021 ◽  
pp. 9-18
Author(s):  
Sonam Gyeltshen
Keyword(s):  
Academic Achievement ◽  
Simple Random Sampling ◽  
Experience Level ◽  
University Teachers ◽  
University Mathematics ◽  
Experience Levels ◽  
Significant Difference ◽  
The Mean ◽  
The Difference ◽  
Positive Effect

Aims: This study aims to examine the effect of qualification and experience level on students’ academic achievement in mathematic in five colleges under the Royal University of Bhutan.  Study Design: It is a quantitative study where the researcher tests the significance of the difference                             in the mean academic achievement of the students concerning teachers’ qualifications and experience                  level. Place and Duration of Study: Five colleges under the Royal University of Bhutan spread across five districts in Bhutan were considered for the study between July 2020 and July 2021. Methodology: A sample of 25 university mathematics teachers (21 males, 4 females) who taught mathematics from 2018 to 2020 were selected through a simple random sampling. The data was collected in two parts: one the mathematics marks of the modules taught by the 25 teachers from the year 2018 to 2020 was obtained from the respective college's exam records through an official correspondence; second, the information on the perception of these 25 teachers was obtained online through self-administered survey questionnaires.  Results: The result from the two way ANOVA revealed no statistically significant difference between qualifications (Masters and PhD) on students’ academic achievement (F (1, 19) = 3.653, P = 0.07) and between experience levels on students’ academic achievement (F (3, 19) = 0.493, P = 0.69). In contrast, the perception of the teachers is that the higher level of qualifications and experience levels would have a more positive effect on students’ academic achievement. Conclusion: The qualification and experience have a positive effect on students academic achievement but the effects are not significant.

scholarly journals The Effects of Specific Stretching Exercises on Flexibility and Balance Parameters in Gymnastics

2019 ◽  
Vol 8 (5) ◽  
pp. 136
Author(s):  
Ömer Özer ◽  
Recep Soslu
Keyword(s):  
Training Programs ◽  
Preliminary Test ◽  
Female Students ◽  
Test Analysis ◽  
Significant Difference ◽  
Post Test ◽  
The Difference ◽  
Flexibility Parameters ◽  
Positive Effect ◽  
Stretching Exercises

This study was planned to examine the effect of Gymnastics-specific stretching exercises on flexibility and balance parameters. A total of 28 (16 males, 12 females) volunteer students were involved in the study, who were educated at the School of Physical Education and Sports. For 12 Weeks, 2 days a week and 90 min. stretching exercises specific to the gymnastics branch were applied and flexibility (sit-lie down) and Y balance tests were applied before the study. Anova test analysis was used to determine the difference between pre-test and post-test. Although the SA (right foot anterior), SPL (right foot posterolateral), SPM (right foot posteromedial), SLA (left foot anterior), SLPL (left foot posterolateral), SLPM (left foot posteromedial) scores of male and female students in the study showed a positive increase compared to the preliminary test scores, there was no statistically significant difference (p &gt; .05). As a result, gymnastic branch-specific stretching exercises increase the balance and flexibility parameters in a positive way; it is thought that the longer duration of training programs will have a positive effect on the athlete&rsquo;s performance.

Clinical Curative Effect of Acupuncture Therapy on Xerophthalmia

2010 ◽  
Vol 38 (04) ◽  
pp. 651-659 ◽  
Author(s):  
Lan Gong ◽  
Xinghuai Sun ◽  
William J. Chapin
Keyword(s):  
Acupuncture Therapy ◽  
Statistical Significance ◽  
Curative Effect ◽  
Artificial Tear ◽  
Therapy Program ◽  
Dextran 70 ◽  
Significant Difference ◽  
Stopping Treatment ◽  
The Difference ◽  
Positive Effect

This study observes changes in symptoms of xerophthalmia pre- and post-acupuncture therapy and compares the results of the acupuncture therapy (AT) group and the artificial tear control (ATC) group. Parallel comparative studies were carried out on 44 patients with xerophthalmia, who were divided into the AT group (n = 20) and the ATC group (n = 24). A 10-session acupuncture therapy program was performed for the AT group while Dextran 70 was used for the ATC group with each course of treatment lasting 21 day. Examinations were made on the day when a patient was chosen to join the study, 1 hour after completion of treatment, and 3 weeks after stopping treatment. There was no statistically significant difference in terms of the reduction of the symptoms and sign score (SSS) 1 hour after completion of treatment between the AT group and the ATC group. Three weeks after completion of treatment, the reduction of SSS for the AT group was larger than that of the ATC group, with the difference achieving statistical significance. Both acupuncture therapy and artificial tear therapy have an immediate positive effect on the symptoms of xerophthalmia, but acupuncture therapy has a longer continuous effect than that of artificial tears.

scholarly journals Impact of Training on Expectation of Employee and Employer: A comparative study

2013 ◽  
Vol 5 (12) ◽  
pp. 601-607
Author(s):  
Syed Muhammad Javed ◽  
Saqib Muneer . ◽  
Melati Ahmad Anuar .
Keyword(s):  
Comparative Study ◽  
Sample Size ◽  
T Test ◽  
Training Outcomes ◽  
Paired Sample ◽  
Training Satisfaction ◽  
Significant Difference ◽  
The Difference ◽  
Hr Managers ◽  
Positive Effect

Organizations today spend millions of dollars on training to enhance the performance of their employees, which leads to formation of expectation on employers end as well as employees ends observing this phenomena ,this research was conducted to analyze the expectations of employee and employer and its impact on post training satisfaction, for that matter data was collected from 20 organization where training is provided ,sample size was 20 training / HR managers and per managers 5 employees, paired sample t test was applied to gauge the difference or similarity between the perception and expectation of employees and employer, after the analysis it was found that there is significant difference between the perception of employee and employers on the expected training outcomes and no similarity existed between the expectation of employee and employer which did not have positive effect on post training satisfaction.

Cranial crassicaudiasis in two coastal dolphin species from South Africa is predominantly a disease of immature individuals

2020 ◽  
Vol 139 ◽  
pp. 93-102 ◽  
Author(s):  
MF Van Bressem ◽  
P Duignan ◽  
JA Raga ◽  
K Van Waerebeek ◽  
N Fraijia-Fernández ◽  
...  
Keyword(s):  
South Africa ◽  
Bone Development ◽  
Bottlenose Dolphins ◽  
Fatal Outcome ◽  
Population Level ◽  
Cape Coast ◽  
Osteolytic Lesions ◽  
Immune Mediated ◽  
Significant Difference ◽  
The Difference

Crassicauda spp. (Nematoda) infest the cranial sinuses of several odontocetes, causing diagnostic trabecular osteolytic lesions. We examined skulls of 77 Indian Ocean humpback dolphins Sousa plumbea and 69 Indo-Pacific bottlenose dolphins Tursiops aduncus, caught in bather-protecting nets off KwaZulu-Natal (KZN) from 1970-2017, and skulls of 6 S. plumbea stranded along the southern Cape coast in South Africa from 1963-2002. Prevalence of cranial crassicaudiasis was evaluated according to sex and cranial maturity. Overall, prevalence in S. plumbea and T. aduncus taken off KZN was 13 and 31.9%, respectively. Parasitosis variably affected 1 or more cranial bones (frontal, pterygoid, maxillary and sphenoid). No significant difference was found by gender for either species, allowing sexes to be pooled. However, there was a significant difference in lesion prevalence by age, with immature T. aduncus 4.6 times more likely affected than adults, while for S. plumbea, the difference was 6.5-fold. As severe osteolytic lesions are unlikely to heal without trace, we propose that infection is more likely to have a fatal outcome for immature dolphins, possibly because of incomplete bone development, lower immune competence in clearing parasites or an over-exuberant inflammatory response in concert with parasitic enzymatic erosion. Cranial osteolysis was not observed in mature males (18 S. plumbea, 21 T. aduncus), suggesting potential cohort-linked immune-mediated resistance to infestation. Crassicauda spp. may play a role in the natural mortality of S. plumbea and T. aduncus, but the pathogenesis and population level impact remain unknown.

Perbedaan Penggunaan Antikoagulan K2EDTA DAN K3EDTA Terhadap Hasil Pemeriksaan Indeks Eritrosit

2018 ◽  
Vol 1 (2) ◽  
pp. 114
Author(s):  
Wahdaniah Wahdaniah ◽  
Sri Tumpuk
Keyword(s):  
Screening Test ◽  
Venous Blood ◽  
The Body ◽  
Ethylene Diamine ◽  
P Value ◽  
Cross Sectional ◽  
Significant Difference ◽  
Ethylene Diamine Tetra Acetate ◽  
The Difference ◽  
Index Value

Abstract: Routine blood examination is the earliest blood test or screening test to determine the diagnosis of an abnormality. Blood easily froze if it is outside the body and can be prevented by the addition of anticoagulants, one of which Ethylene Diamine Tetra Acetate (EDTA). Currently available vacuum tubes containing EDTA anticoagulants in the form of K2EDTA and K3EDTA. K3EDTA is usually a salt that has better stability than other EDTA salts because it shows a pH approaching a blood pH of about 6.4. The purpose of this research is to know the difference of erythrocyte index results include MCH, MCV and MCHC using K3EDTA anticoagulant with K2EDTA. This research is a cross sectional design. This study used venous blood samples mixed with K2EDTA anticoagulant and venous blood mixed with K3EDTA anticoagulants, each of 30 samples. Data were collected and analyzed using paired different test. Based on data analysis that has been done on MCH examination, p value <0,05 then there is a significant difference between samples with K3EDTA anticoagulant with K2EDTA to erythrocyte index value. Then on the examination of MCV and MCHC obtained p value <0.05 then there is no significant difference between samples with K3EDTA anticoagulant with K2EDTA to erythrocyte index value.Abstrak: Pemeriksaan darah rutin merupakan pemeriksaan darah yang paling awal atau screening test untuk mengetahui diagnosis suatu kelainan. Darah mudah membeku jika berada diluar tubuh dan bisa dicegah dengan penambahan antikoagulan, salah satunya Ethylene Diamine Tetra Acetate (EDTA). Dewasa ini telah tersedia tabung vakum yang sudah berisi antikoagulan EDTA dalam bentuk  K2EDTA dan  K3EDTA. K3EDTA  biasanya berupa garam yang mempunyai stabilitas yang lebih baik dari garam EDTA yang lain karena menunjukkan pH yang mendekati pH darah yaitu sekitar 6,4. Tujuan dari penelitian ini adalah untuk mengetahui perbedaan hasil indeks eritrosit meliputi MCH, MCV dan MCHC menggunakan antikoagulan K3EDTA dengan K2EDTA. Penelitian ini merupakan penelitian dengan desain cross sectional. Penelitian ini menggunakan sampel darah vena yang dicampur dengan antikoagulan K2EDTA dan darah vena yang dicampur dengan antikoagulan K3EDTA, masing-masing sebanyak 30 sampel. Data dikumpulkan dan dianalisis menggunakan uji beda berpasangan. Berdasarkan analisis data yang telah dilakukan pada pemeriksaan MCH didapatkan nilai p < 0,05 maka ada perbedaan yang signifikan antara sampel dengan antikoagulan K3EDTA dengan K2EDTA terhadap nilai indeks eritrosit. Kemudian pada pemeriksaan MCV dan MCHC didapatkan nilai p < 0,05 maka tidak ada perbedaan yang signifikan antara sampel dengan antikoagulan K3EDTA dengan K2EDTA terhadap nilai indeks eritrosit.

Pengaruh Jumlah Pencucian Beras dengan Kadar Klorin

2017 ◽  
Vol 1 (1) ◽  
pp. 89
Author(s):  
Indah Purwaningsih ◽  
Supriyanto Supriyanto
Keyword(s):  
Mucous Membrane ◽  
Confidence Level ◽  
Iodometric Titration ◽  
Titration Method ◽  
Anova Test ◽  
Average Value ◽  
Significant Difference ◽  
The Difference

Abstract: Chlorine is a green halogen-shaped halogen gas at normal temperature and serves as bleach, stain remover and disinfectant. Chlorine is now widely used for bleaching rice so that less quality rice looks like quality rice. Chlorine is very toxic and causes mucous membrane irritation, highly reactive and very powerful oxidizer. The purpose of this research was to determine the difference of chlorine level in chlorinated rice washed once, twice and 3 times. The sample in this study amounted to 11 samples calculated by replication formula. Each sample was treated 3 times, ie 1 washed once, 2 washed twice and washed 3 times. The samples then examined by iodometric titration method. Based on the results of the study using ANOVA test, 11 samples obtained the average value of chlorine after washed once amount of 0.0176%, after washed twice amount of 0.0111%, and after washed 3 times amount of 0.0052% with the value significance p = 0.03 (p <0.05) at 95% confidence level which means there was a significant difference between chlorine levels in chlorinated rice washed once, twice and 3 times.Abstrak: Klorin merupakan unsur halogen berbentuk gas berwarna kuning kehijauan pada suhu normal danberfungsi sebagai pemutih, penghilang noda maupun desinfektan. Klorin sekarang banyak digunakan untuk bahan pemutih beras agar beras yang kurang berkualitas tampak seperti beras berkualitas. Klorin sangat toksik dan menyebabkan iritasi membran mukosa, sangat reaktif dan merupakan oksidator yang sangat kuat. Tujuan dari penelitian ini ialah untuk mengetahui perbedaan kadar klorin pada beras berklorin yang dicuci sebanyak 1 kali, 2 kali dan 3 kali. Sampel dalam penelitian ini berjumlah 11 sampel yang dihitung dengan rumus replikasi. Setiap sampel diberi perlakuan sebanyak 3 kali, yaitu 1 kali pencucian, 2 kali pencucian dan 3 kali pencucian. Sampel penelitian kemudian diperiksa dengan metode titrasi iodometri. Berdasarkan hasil penelitian menggunakan uji Anova secara komputerisasi terhadap 11 sampel diperoleh nilai rata-rata kadar klorin setelah 1 kali pencucian sebesar 0,0176 %, setelah 2 kali pencucian sebesar 0,0111 %, dan setelah 3 kali pencucian sebesar 0,0052 % dengan nilai signifkansi p = 0,03 (p<0,05) pada tingkat kepercayaan 95% yang artinya ada perbedaan yang bermakna antara kadar klorin pada beras berklorin yang dicuci sebanyak 1 kali, 2 kali dan 3 kali.

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