bluuebunny/crossref_metadata_2025 huggingface dataset:
Mechanical Characterization and Numerical Optimization of Aluminum Matrix Hybrid Composite
Authors: Adediran Adeolu Adesoji , Edoziuno Francis Odikpo , Adesina Olanrewaju Seun , Sodeinde Kehinde Oluseun , Ogunkola Abiodun Babafemi , Oyinloye Goodness Adeola , Nwaeju Cynthia Chinasa , Akinlabi Esther Titilayo
Published: June 2022

Hybridization of aluminium matrix composite is with a view to offset the properties deficient in one composite reinforcement. The present investigation involves a comparative study of AA6063 matrix composites with single reinforcement of Al2O3, SiC, graphene respectively and various hybridized proportions of the same reinforcements. Physical (density and %porosity) and mechanical (tensile strength, fracture toughness, %elongation, elastic modulus, etc.) properties of composites developed via solidification processing technique were evaluated. The porosity of all the composites falls below the maximum acceptable limit for cast metal matrix composite. Maximum values for UTS, %elongation and absorbed energy at maximum stress was obtained by hybrid composite with 4wt% Al2O3, SiC and 2wt% graphene, while the composite with the highest single reinforcement of graphene have the highest value for elastic modulus and fracture toughness. Numerical optimization results show that a matrix and hybrid reinforcements contents of AA6063 (91.413wt.%), SiC (3.679wt.%), Al2O3 (0.277wt.%), and graphene (4.632wt.%) respectively, will result in optimal values for the evaluated properties.
Analysis of the Multi-Directional Forging of Aluminium Alloy 7075 Process Parameters: Numerical and Experimental Analysis
Authors: Obara Cleophas , Mwema Fredrick M. , Jen Tien Chien
Published: June 2022

In this study, a multi-directional forging process was conducted on AA 7075. Analysis of the evolution of the mechanical properties (tensile and hardness) and the microstructure was done. The effects of the process parameters (temperatures, die speed, and strain per pass) on the process outputs were investigated. The hardness of the MDF processed samples was determined using Brinell hardness tester, the tensile tests were conducted on a universal tensile machine (GT-7001-LS50), while the grains were observed using the Zeiss Axio Zoom V16 microscope and Tescan VEGA3 scanning electron microscope. It was observed that the MDF process leads to grain refinement with increase temperature and strain per pass. However, large strains per pass caused damages to the samples. The hardness and the tensile strength were seen to generally improve with an increase in strain per pass.
Stroke-related knowledge and attitudes among university students in Northeast Nigeria
Authors: Alkali Nura H. , Chiroma Aminu A. , Tinja Rahamat M. , Garba Muhammad , Dunga Jacob A. , Saidu Abubakar , Misau Yusuf A. , Mohammed Alkali , Jibrin Yusuf B. , Umar Mustapha S. , Dachi Rufai A. , Saad Fadimatu K.
Published: June 2022

Stroke education programs at schools and colleges help to promote public knowledge of stroke, but the impact in Nigeria is not well known. This study assessed stroke-related knowledge and attitudes among university students in Nigeria, where health studies are parts of college curricula. This was a cross-sectional study of students at three universities in Northeast Nigeria. Using questionnaire survey, we assessed biographical data and participant knowledge of the primary site, warning signs and risk factors of stroke. Responses were graded on a knowledge score, where ≥2.5 points indicated adequate knowledge. Data were analyzed with the SPSS version 21 program. We studied 824 participants, 67.1% males. Males were older than females (mean age ± SD: 27.42±5.58 years versus 26.27±5.31 years; P = 0.009; 95% CI: 0.29 – 1.99) and 14.5% participants had stroke lectures during general studies. Major sources of stroke knowledge were personal discussions (44.6%) and internet websites (24.5%). Only 15.7% participants correctly identified the brain as the primary site of stroke, while knowledge of one or more stroke warning signs and risk factors were noted in 42.2% and 49.6%, respectively. Mean knowledge score was 1.08 ± 0.99. Adequate knowledge of stroke was noted in 13.2% participants, and was higher in females (17.7% versus 10.7%; P = 0.01). Logistic regression analysis showed significant associations between adequate knowledge of stroke with female sex (OR 1.8; 95% CI: 1.2 – 2.8; P = 0.008) and a history of stroke in close relatives (OR 1.7; 95% CI: 1.1 – 2.6; P = 0.025) but not with age, academic discipline or stroke lectures. University students in Northeast Nigeria have low knowledge of stroke, which is worse in males. Although health issues are taught at universities, little is taught on stroke, suggesting a need to prioritize stroke knowledge in the university curriculum.
The effect of retroperitonealization of ureteroileal anastomosis on perioperative complications of radical cystectomy with ileal conduit urinary diversion
Authors: Ariafar Ali , Salehipour Mehdi , Zeyghami Shahriar , Rezaei Mehran
Published: June 2022

Background: Radical cystectomy (RC) has been considered the standard management of muscle-invasive bladder cancer. Despite the improvements in surgical techniques and perioperative care, RC is still associated with high perioperative morbidity and mortality. Objective: This study aims to evaluate the effect of retroperitonealization of ureteroileal anastomosis on perioperative complications of RC with ileal conduit urinary diversion. Patients and methods: This is a retrospective cohort study. We reviewed medical charts of 876 patients who underwent RC between 2016 and 2021. Based on the inclusion and exclusion criteria, 748 patients entered the study. According to retroperitonealization of the ureteroileal anastomosis, patients were categorized into two groups (group I without retroperitonealization of the ureteroileal anastomosis and group II with retroperitonealization of the ureteroileal anastomosis). Patients’ characteristics and occurrences of any complications and high-grade complications were compared between these groups. Results: In comparing the complication categories between the two groups, fewer patients in group II suffered from gastrointestinal, urinary, and cardiac events (p values were 0.018, 0.021, and 0.013, respectively). Moreover, fewer patients in group II experienced any complications and high-grade complications (p values were < 0.001 and < 0.001, respectively). The length of hospital stay was also significantly shorter in group II (p < 0.001). Conclusions: RC is associated with comparatively high perioperative morbidity and mortality. In the present study, 61% of the patients experienced at least one complication postoperatively. Retroperitonealization of the ureterointestinal anastomosis may decrease perioperative adverse events of RC with ileal conduit urinary diversion.
Morbidity following transperineal prostate biopsy: Our experience in 8.500 men
Authors: Pepe Pietro , Pennisi Michele
Published: June 2022

Introduction: To evaluate clinical complications following transperineal prostate biopsy in 8.500 patients. Materials and methods: From January 2000 to January 2022, 8,500 men (median age: 62.8 years) underwent transperineal prostate biopsy; since 2011, 1,850 patients were submitted to mpMRI and in the presence of a PI-RADS score ≥ 3, a transperineal targeted biopsy was added to systematic prostate biopsy (4 cores). All patients underwent antibiotic prophylaxis (2000-2011: levoxacin 500 tablet; 2012-2022: 2 grams intravenous of cefazolin). Among 8.500 men 1.350 (15.8%) vs. 4.520 (53.3%) vs. 2.630 (30.9%) underwent 12 vs. 18 vs. > 24 needle cores, respectively. The prostate biopsy-related complications were evaluated within 20 days from prostate biopsy; the number of patients who needed hospital admission or emergency department visit (EDV) was recorded. Results: Prostate cancer was found in 3.150/8.500 (37.1%) patients; overall, hospital admission and EDV were equal to 1.5% and 8.9% and the side effects were directly correlated with the number of needle cores resulting equal to 17.4% (12 cores), 38.7% (18 cores) and 55.3% (> 24 cores) (p = 0.001). Hospital admission and EDV in men who underwent 12 vs. 18 vs. > 24 cores occurred in 1.5% and 7.4% vs. 1.4% and 8.7% vs. 1.7% and 10.6% (p > 0.05), respectively. Conclusions: Clinical complications following transperineal prostate biopsy involved 35.9% of the patients but only 1.5% of them required hospital admission; urinary tract infection with fever was the most frequent cause of hospital recovery (33.4% of the cases), but none of the patients developed sepsis.
Cost-effectiveness analysis of short biparametric magnetic resonance imaging protocol in men at risk of prostate cancer
Authors: Faccioli Niccolò , Santi Elena , Foti Giovanni , Curti Pierpaolo , D'Onofrio Mirko
Published: June 2022

Objectives: To compare the cost-effectiveness of a short biparametric MRI (BP-MRI) with that of contrast-enhanced multiparametric MRI (MP-MRI) for the detection of prostate cancer in men with elevated prostatespecific antigen (PSA) levels. Materials and methods: We compared two diagnostic procedures for detection of prostate cancer (Pca), BP-MRI and MP-MRI, in terms of quality-adjusted life years (QALY), incremental costeffectiveness ratio (ICER) and net monetary benefit (NMB) for a hypothetical cohort of 10,000 patients. We compared two scenarios in which different protocols would be used for the early diagnosis of prostate cancer in relation to PSA values. Scenario 1. BP-MRI/MP-MRI yearly if > 3.0 ng/ml, every 2 years otherwise; Scenario 2. BP-MRI/MP-MRI yearly with age-dependent threshold 3.5 ng/ml (50-59 years), 4.5 ng/ml (60-69 years), 6.5 ng/ml (70-79 years). Results: BP-MRI was more effective than the comparator in terms of cost (160.10 € vs 249.99€) QALYs (a mean of 9.12 vs 8.46), ICER (a mean of 232.45) and NMB (a mean of 273.439 vs 251.863). BP-MRI was dominant, being more effective and less expensive, with a lower social cost. Scenario 2 was more cost-effective compared to scenario 1. Conclusions: Our results confirmed the hypothesis that a short bi-parametric MRI protocol represents a cost-efficient procedure, optimizing resources in a policy perspective.
Prostate resection weight matters in severely obstructed men undergoing transurethral resection of the prostate
Authors: Lopes Filipe , Pereira e Silva Ricardo , Fernandes Miguel , Palmela Leitão Tito , Palma dos Reis José
Published: June 2022

Objectives: Transurethral resection of the prostate (TURP) remains one of the goldstandard surgical treatments for benign prostatic hyperplasia/lower urinary tract symptoms. The usefulness of a complete adenoma resection is questionable, with studies reporting no impact of the amount of resected tissue on surgical outcomes, irrespective of prostate volume. The aim of this study was to assess whether in less obstructed patients a less extensive TURP may be considered. Materials and methods: Retrospective analysis of 185 men undergoing TURP in one university hospital. Retrieved data included pre-operative prostate volume and Qmax, as well as resected prostate weight and post-operative Qmax. Patients were divided in two groups according to pre-operative Qmax < 10mL/s and ≥ 10 mL/s. Results: A correlation was found between absolute resected prostate weight and post-operative Qmax in the group of patients with pre-operative Qmax < 10 mL/s (r2 = 0.038, p = 0.032), independently of the pre-operative prostate volume. This association was neither observed in the group of patients with pre-operative Qmax ≥ 10 mL/s (r2 = -0.033, p = 0.796) nor in whole population analysis (r2 = 0.019, p = 0.064). Likewise, in the group of patients with pre-operative Qmax < 10 mL/s, the improvement in Qmax was correlated with absolute resected weight and percentage of prostate resected weight (r2 = 0.036, p = 0.037 and r2 = 0.040, p = 0.029, respectively). None of these correlations was found in the group of patients with pre-operative Qmax ≥ 10 mL/s (r2 = 0.009, p = 0.463 and r2 = -0.018, p = 0.294, respectively). Conclusions: Patients with pre-operative Qmax ≥ 10 mL/s may do well with less profound prostate resections, whereas patients with lower pre-operative Qmax seem to benefit from a complete adenoma resection.
Erectile function in amateur cyclists
Authors: E Brito Duarte Vieira , Pereira-Lourenço Mario , Pereira Jose Alberto , Eliseu Miguel , Rabaça Carlos
Published: June 2022

Introduction: Cycling is a popular means of transport and recreational activity; bicycles are also a source of genitourinary injuries and there is the idea that cycling may have a significant impact on sexual function. The objective of this study was to evaluate the effect of amateur cycling on erectile function. Methods: We used a questionnaire comparing amateur cyclists (n = 199) and footballers (n = 43), regarding sexual related comorbidities and hours of practice per week. The cyclists were also characterized in terms of road vs cross-country, breaks during cycling, saddle, and shorts. To evaluate erectile function, the International Index of Erectile Function questionnaire was applied. Results: there was no difference in International Index of Erectile Function total score between groups. Age and presence of erectile dysfunction associated comorbidity were negative factors in the International Index of Erectile Function score in cyclists but not in the footballers. Conclusions: Cycling is usually associated with perineal numbness, but that numbness did not lead to lower International Index of Erectile Function scores. In conclusion amateur cycling has no effect on EF.
Giant hepatic adenoma managed with anatomical right hepatectomy: A case report
Authors: Bello Usman M. , Nwachukwu Callistus , Oloko Nasirudeen
Published: June 2022

We report the case of a 38-year-old Nigerian female who presented with right hypochondrial pain. She had previously used oral contraceptive pills for about a year. Physical examination revealed tender hepatomegaly. Her liver function tests were within normal limit as well as alfa-feto protein. Abdominopelvic magnetic resonance imaging showed hepatomegaly with a lobulated mass occupying segments VII and VIII of the liver. She underwent right hepatectomy, and she recovered well post operatively. She is currently being followed up.
Severe neurotoxic envenomation following cobra bite in Northern Nigeria: A report of three cases
Authors: Hamza Muhammad , Balla Abubakar S. , Maifada Yakasai Ahmad , Ibrahim Nashabaru Muhammad , Muhammad Nalado Aishatu , Habib Abdulrazaq G.
Published: June 2022

Cobra is a common snake throughout Africa and Asia, however, there are few literatures reporting neurotoxic cobra bite from Sub-Saharan Africa (SSA), including Northern Nigeria. Here, we report 3 cases that were bitten by cobra in the savannah region of Nigeria. All the 3 cases presented with features of severe neurotoxic envenomation: generalized hypotonia, ptosis, and features of autonomic dysfunction, which include excessive salivation and sweating. One of the 3 victims progressed to develop respiratory paralysis that resulted in death. The other 2 cases survived after receiving polyvalent anti-snake venom.
Prevalence and reasons associated with antibiotics misuse and self-medication among adults in Nigeria: A systematic review and meta-analysis [Protocol]
Authors: Misau Yusuf Abdu , Mogere Dominic , Mbaruk Suleiman , Bello Segun , Oduwole Olabisi
Published: June 2022

There is consistent increase in prevalence of antibiotics misuse and self-medication in Nigeria. The exact quality of information available in the public domain is unknown. There is no previous systematic review and meta-analysis that address antibiotics misuse and self-medication in Nigeria. Being the most populous country in Africa, understanding the drivers of antibiotics misuse and self-medication will impact in not only Nigeria, but Africa as a whole. The aim of this systematic review and meta-analysis is therefore to determine the prevalence and factors associated with antibiotics misuse and self-medication among adults in Nigeria. Attempt will be made to find and include published papers on prevalence and reasons associated with antibiotics misuse and self-medication among adults in Nigeria from 2011-2021. Systematic search for the literature will be conducted according to the Preferred Reporting Item for Systematic Reviews and Meta-Analysis (PRISMA) guidelines to identified published studies based on our predetermined inclusion and exclusion criteria in PubMed, EMBASE, PsychINFO, CINAHL and Web of Sciences. Two independent reviewers will assess all identified studies and another set of reviewers will extract data for analysis and evidence synthesis.
Synchronous primary malignancies and pre-cancers affecting entire hysterectomy specimen
Authors: Bharti Shreekant , Jamal Iffat , Singh Pritanjali
Published: June 2022

Synchronous tumours of the female genital tract are rare, accounting for approximately 1%–2% of all gynaecological malignancies involving simultaneous independent primary malignancies. Synchronous tumours in the ovary and endometrium are the most common combination. We report on a 58-year-old postmenopausal woman who presented with bleeding per vaginum for 1.5 months with no prior menstrual complaints. On per vaginal examination, a mass was felt in the pelvis. Ultrasonography revealed a mass of 8 cm × 9 cm in size filling the entire uterine cavity. Contrast enhanced computed tomography showed a multilobate mass in the pelvis, replacing the whole uterus and cervix, with heterogeneous enhancement and internal necrosis. Bilateral ovaries were not visualised separately. The radiological impression suggested an endometrial carcinoma. Wertheim's hysterectomy was subsequently performed. On microscopic examination, the uterine mass revealed a malignant mixed Müllerian tumour (carcinosarcoma) of the endometrium, along with a high-grade serous carcinoma of the left ovary and left fallopian tube. The right fallopian tube showed adenocarcinoma in situ. The patient had an unusual past history of multiple system comorbidities, a few of which were continuing and for which she was receiving medical treatment.
Cavernous Hemangioma Resembling Lymphangioma Circumscriptum
Authors: Djawad Khairuddin
Published: June 2022

Vascular tumors and malformations are often called “angiomas.” Cavernous hemangiomas are more commonly found in adolescents, often on the face and rarely on the extremities. Surgery may be pursued for cosmesis in cases of cutaneous lesions that do not involute. A 12-year-old girl presented with a lump on her right knee 4 years ago. Initially, the lump was flat and appeared like a bluish bruise but then slowly enlarged. There were no complaints of itching, pain, and other discomfort. Physical examination showed a 3.2 cm × 2.1 cm mobile violaceous tumor composed of dark red or blue-black vesicles in the right knee, clinically resembling lymphangioma circumscriptum. Dermoscopic examination showed a pattern composed of central dark, red-blue lacunae, white structures, and a peripheral brownish homogeneous area, which was consistent for cavernous hemangioma. The patient underwent biopsy excision and the diagnosis was confirmed through histopathological examination.
Lichen Planus after COVID-19 Vaccination
Authors: Alotaibi Salman H. , Alharithy Ruaa , Alsharif Faisal A. , Alkhayal Norah
Published: June 2022

Lichen planus is a T-cell-mediated inflammatory disease that can be associated with preexposure to particular agents encompassing vaccines, viruses, and drugs. The origin of the disease is unknown and has varying clinical presentations, the recent manufactured COVID-19 vaccines have been linked with several cutaneous reactions that are similar to the cutaneous manifestations of COVID-19 virus infection, the majority of people developed cutaneous manifestations after the second dose of Pfizer vaccine, recent cases have been reported as a flare of a preexisting lichen planus following the administering of the Pfizer vaccine. We present a two interesting cases that developed a dermatological condition post Pfizer-BioNTech's COVID-19 vaccine. The first case is a 60-year-old man, with a past medical history of having lichen planus 15 years ago, that have been treated and controlled successfully with topical therapy, flared up following the administration of Pfizer-BioNTech's COVID-19 vaccine. The second case is a 57-year-old female with a past medical history of hypertension and hypothyroidism controlled. Develop the new onset of lichen planus after receiving the third dose of the COVID 19 vaccine. The lesions arise 3 weeks after the third dose.
Neurotic Excoriation Presenting as Solitary Papule
Authors: Aldhahwani Rawan M. , Al Hawsawi Khalid A.
Published: June 2022

Neurotic excoriation (NE) is a repetitive manipulation of the skin that causes tissue damage. Here, we report on a 56-year-old male, otherwise healthy, who presented with a 1-year history of a recurrent slightly itchy skin lesion on his nose. Skin examination revealed a solitary round 0.5 cm × 0.5 cm pigmented crusted papule on his nose. A skin biopsy was taken, and it showed an epidermal crust with underlying mild inflammatory cell infiltrate in the upper dermis. On the basis of these clinical and pathological findings, the diagnosis of NE was made. The patient was reassured and prescribed Fucidin cream and betamethasone valerate ointment. Behavioral therapy was also initiated.
A Comparison of Autologous Serum, Plasma, and Whole Blood for Intradermal Autoreactivity Testing in Patients with Chronic Spontaneous Urticarial
Authors: Ismail Rasimah , Jamil Adawiyah , Md. Nor Norazirah , Bakhtiar Mohammed F.
Published: June 2022

Background:

Autologous serum (ASST) and plasma (APST) skin testing confirm autoreactivity in chronic spontaneous urticaria (CSU). Whole blood autohemotherapy has been used. Plasma and even whole blood may be used instead of serum with relatively quicker preparation and cheaper method especially using the latter in centers with limited resources.

Purpose:

The purpose of the study is to determine if similar intradermal skin reactions can be observed when using either serum, plasma, or whole blood in autologous skin tests and to determine factors associated with positive tests and wheal diameter.

Methods:

We performed a cross-sectional study of chronic urticaria patients in a dermatology clinic. Tests were performed according to EAACI/GA2 LEN Task Force recommendations. Urticaria Activity Score over 7 days (UAS7) was assessed. Statistical analyses included Chi-square, Mann–Whitney U, Spearman's, and Wilcoxon rank tests.

Results:

Twenty-six (77%) females and 8 (24%) males mean age 34 (26–42) years participated. ASST, APST and autologous whole blood for skin testing (AWBST) positivity rates were 24%, 29% and 27%, respectively (P = 0.86). 13 (38%) had at least 1 positive test; all tests were negative in 21 (62%). All tests were positive in 7 (21%), 3 (23%) were positive APST alone, 2 (15%) AWBST, 1 (8%) ASST. Pretest UAS7 was higher with those with test positive (P = 0.04). Test results were unaffected by age, gender, disease duration, atopy, anti-nuclear antibody, and thyroid status. Wheal diameter correlated with thyroid-stimulating hormone (P = 0.04).

Conclusion:

Autoreactivity rates were similar with ASST, APST, and AWBST. Positive tests were associated with severe CSU. Autologous whole blood may be a simpler and less costly alternative to plasma and serum for autoreactivity skin testing in patients with chronic urticaria.
Awareness of Lactose Intolerance Disorder in Saudi Arabia Population
Authors: Alzahrani Mohammed Attieh , AlGhrab Saad Khaled , Althwabi Mohammed Yahya , Sudan Abdulaziz Abdullah , Jurays Nasser Saeed , Alalyani Fahad Abdullah , Bin Fudhayl Saud Abdullah , Alfahadi Mohammed Abdullah , Asiri Yahia Mohammed , Alshahrani Abdulaziz Saad
Published: June 2022

ABSTRACT

Background:

Lactose intolerance is defined as “Lactose malabsorption with gastrointestinal symptoms.” Also, lactose malabsorption can be defined as “Not all ingested lactose was absorbed and that some has reached the large intestine.” The common symptoms associated with the maldigestion of lactose are bloating, diarrhoea, nausea, and abdominal pain.

Aim:

The current study aims to assess knowledge of people awareness of the lactose intolerance disorder and its relation to nutrition and dietary habits in Saudi Arabia.

Methods:

A descriptive cross-sectional approach was used targeting all accessible population in Saudi Arabia aging 18 years or more and accept to participate in the study. Data were collected from participants using an online pre-structured questionnaire. The researchers constructed the survey tool after intensive literature review and expert’s consultation. The questionnaire covered the following data: participants’ socio-demographic data like age, gender, and monthly income. Second section covered participants’ dairy products intake with associated symptoms. Third part covered personal and family history of glucose intolerance disorder among the study participants. Awareness was assessed using multiple repose and mutually exclusive questions.

Results:

A total of 1189 participants fulfilling the inclusion criteria completed the study questionnaire. Participants ages ranged from 18 to 58 years old with mean age of 25.1 ± 12.9 years. Exact of 692 (58.2%) participants were females. Exact of 104 (8.7%) of the study participants reported that they had lactose intolerance disorder which started at the age of 11 to 20 years among 41 (39.4%) and at the age of 21 to 30 years among 36 (34.6%). About 77% of the study participants know that lactose indolence disorder symptoms appear after eating dairy or its derivatives. A total of 45.8% reported that leaky gut syndrome (diarrhoea and bloating) is caused by symptoms that occur with lactose intolerance and 39.4% know lactose intolerance is an uncurable disease.

Conclusion:

In conclusion, this study revealed that nearly one out of each three persons on Saudi Arabia is knowledgeable regarding lactose intolerance disorder and its related factors and relieving factors. Dairy products use in daily basis was reported among two thirds of the study population with abdominal distention and abdominal pain was the main accompanying symptoms.
Potential for critical mineral deposits in Maine, USA
Authors: Slack John F. , Beck Frederick M. , Bradley Dwight C. , Felch Myles M. , Marvinney Robert G. , Whittaker Amber T.H.
Published: June 2022

An analysis of the potential for deposits of critical minerals and elements in Maine presented here includes data and discussions for antimony, beryllium, cesium, chromium, cobalt, graphite, lithium, manganese, niobium, platinum group elements, rhenium, rare earth elements, tin, tantalum, tellurium, titanium, uranium, vanadium, tungsten, and zirconium. Deposits are divided into two groups based on geological settings and common ore-deposit terminology. One group consists of known deposits (sediment-hosted manganese, volcanogenic massive sulphide, porphyry copper-molybdenum, mafic- and ultramafic-hosted nickel-copper [-cobalt-platinum group elements], pegmatitic lithium-cesium-tantalum) that are in most cases relatively large, well-documented, and have been explored extensively in the past. The second, and much larger group of different minerals and elements, comprises small deposits, prospects, and occurrences that are minimally explored or unexplored. The qualitative assessment used in this study relies on three key criteria: (1) the presence of known deposits, prospects, or mineral occurrences; (2) favourable geologic settings for having certain deposit types based on current ore deposit models; and (3) geochemical anomalies in rocks or stream sediments, including panned concentrates. Among 20 different deposit types considered herein, a high resource potential is assigned only to three: (1) sediment-hosted manganese, (2) mafic- and ultramafic-hosted nickel-copper(-cobalt-platinum group elements), and (3) pegmatitic lithium-cesium-tantalum. Moderate potential is assigned to 11 other deposit types, including: (1) porphyry copper-molybdenum (-rhenium, selenium, tellurium, bismuth, platinum group elements); (2) chromium in ophiolites; (3) platinum group elements in ophiolitic ultramafic rocks; (4) granite-hosted uranium-thorium; (5) tin in granitic plutons and veins; (6) niobium, tantalum, and rare earth elements in alkaline intrusions; (7) tungsten and bismuth in polymetallic veins; (8) vanadium in black shales; (9) antimony in orogenic veins and replacements; (10) tellurium in epithermal deposits; and (11) uranium in peat.
Glutamic acid decarboxylase antibody-related stiff person syndrome: Two case reports of a child and an adult
Authors: Güllü Gizem , Oguz-Akarsu Emel , Karlı Necdet , Sait Okan Mehmet , Erer Sevda
Published: June 2022

Stiff person syndrome (SPS) is a disease characterized by rigidity in the extremities, axial muscles, and abdominal muscles, severe and painful spasms, and accompanying gait disturbances. Stiff person syndrome is most common in adults between the ages of 20 to 50 and in female sex. The most frequently reported antibody in patients with SPS is antibodies developed against glutamic acid decarboxylase enzyme. In this article, two SPS cases from different age groups who presented with gait disturbance and painful spasms and were found to have glutamic acid decarboxylase antibody positivity were reported with clinical and electrophysiological findings in the light of the literature. As in our cases, SPS should be considered in the differential diagnosis of patients of all age presenting with muscle stiffness and spasms, specifically those that increase with stimulus.
Angioedema Related to Infectious Mononucleosis
Authors: Lüleci Dağlı Duygu , Yüksel Hasan , Tunca Seda , Yılmaz Özge
Published: June 2022

Epstein-Barr virus (EBV), a member of the Herpes-viridae family, is a microorganism could be present in various clinical presentations, from upper respiratory tract infection findings to asymptomatic liver function test elevation, from facial paralysis to angioedema. This case report has been prepared to emphasize EBV infection as a rare factor in the etiology of angioedema.
Varieties and interdependencies of demand and growth regimes in finance-dominated capitalism: a Post-Keynesian two-country stock–flow consistent simulation approach
Authors: Prante Franz , Hein Eckhard , Bramucci Alessandro
Published: June 2022

The authors outline and simulate a stylized Post-Keynesian two-country stock–flow consistent model to demonstrate the interconnection of three of the main features/outcomes of finance-dominated capitalism, namely worsening income distribution for the bottom 90 per cent of households, the rise of international imbalances, and the build-up of financial fragility. In the model, two basic regimes emerge, depending on the institutional setting of the respective model economy: the debt-led private demand boom regime and the export-led mercantilist regime. The authors demonstrate the complementarity and interdependence of these two regimes and show how this constellation transformed after a crisis into the domestic demand-led regime stabilized by government deficits, on the one hand, and export-led mercantilist regimes, on the other, depending on the required deleveraging of private household debt, distributional developments and fiscal policy.
Activated Carbon: A Review of Residual Precursors, Synthesis Processes, Characterization Techniques, and Applications in the Improvement of Biogas
Authors: Sosa José Aurelio , Laines José Ramón , García David Salvador , Hernández Rafael , Zappi Mark , Espinosa de los Monteros Alejandra E.
Published: June 2022

The energy growing demand and the international environmental policies contribute to the use of renewable energy sources. Among these sources, biogas has acquired great relevance due to its energetic similarity to fuels such as liquefied petroleum gas (LPG) and natural gas (NG). However, biogas needs to be upgraded by removing CO2 and trace gases to obtain biomethane (>85% CH4). This review identifies and classifies seven techniques used in biogas upgrading, reported in academic and scientific publications. A 13-year review period (2008-2021) was considered. Lineal regression was used to analyze the publications number per year. Membranes use represents the largest proportion of publications (33%), while activated carbon (AC) reaches only 22%. However, the use and application of AC obtained the best trend as a publication topic, with a maximum value of R2 = 0.7882. This review documents publish works on obtaining and applying AC in biogas enrichment processes. It includes a review of the characteristics and generation rates of various residual lignocellulosic materials used in the synthesis of AC, the synthesis processes, the characterization techniques, and the final adsorption capacities.
Highly effective adsorption of organic dyes from aqueous solutions on longan seed-derived activated carbon
Authors: Hung Nguyen Van , Nguyet Bui Thi Minh , Nghi Nguyen Huu , Thanh Nguyen Mau , Quyen Nguyen Duc Vu , Nguyen Vo Thang , Nhiem Dao Ngoc , Khieu Dihn Quang
Published: June 2022

In this study, longan seeds - an agricultural by-product was used to fabricate activated carbon (LSAC) through two-step pyrolysis with pre-carbonization at low temperature in the first step and then activation by H3PO4. LSAC with large surface area and porous structure exhibits an excellent capacity of absorption towards both cationic dyes (methylene blue (MB), rhodamine-B (RhB)) and anionic dyes (methyl orange (MO), congo red (CR)). Experimental data can be described well by the pseudo-second kinetic model. The maximum adsorption capacity based on Langmuir isotherm model was found as 502.84; 397.77; 464.66 and 350.64 mg.g−1 for MB, RhB, MO and CR, respectively. The adsorption of MB, RhB and CR on LSAC is spontaneous and endothermic, while that for MO is spontaneous but exothermic. Furthermore, the adsorption mechanism of dyes on LSAC was also studied showing that it can occur by electrostatic interaction, hydrogen bonding, the filling of pores involving the interaction between dye ions with specific functional groups such as −OH, −COOH, −NH2 and −PO43- on the LSAC surface. These results suggest that LSAC material may be envisaged as a promising adsorbent for treatment of wastewater in textile industries.
Investigation on the Beneficiation of Fluorite-ore using a mixture of Oleic acid and Palmitic acid via Froth Flotation
Authors: Fatima Aiman , Daood Syed Sheraz , Inaam Shafia , Babar Zaeem Bin , Ahmed Ashfaq , Zafar Muhammad , Qaisrani Tahir Maqsood , Razzaq Abdul , Rashid Muhammad Usman , Kim Sunhyung , Park Young-Kwon
Published: June 2022

Fluorite (fluorspar), an important industrial mineral ore, is one of the major raw materials for the production of hydrofluoric acid. Naturally occurring fluorite ore contains gangue minerals, primarily silica (SiO2) and calcite (CaCO3). The beneficiation of fluorspar is needed to mitigate the severity of operational issues. Several studies on fluorspar beneficiation using the froth floatation technique have been executed, but the process is restricted by the use of minerals acids to remove calcite. In this study, a novel scheme for fluorspar beneficiation was investigated for the floatation of fluorite and depression of calcite and other gangue minerals simultaneously without the use of mineral acids. Moreover, mixtures of saturated and unsaturated fatty acids (oleic acid and palmitic acid) were used instead of mineral acids. Various parameters were investigated, such as the weight percent of the feed-slurry, feed pH, the effect of reagents on the process selectivity, and the effect of feed boiling and dilution on the up-gradation of fluorspar. The adopted methodology with tested reagents resulted a 67 wt. % reduction of CO32- and 75 wt. % reduction of SiO2 in gangue material at a pH 10 for the feed slurry. Fluorspar purity increased from 65-75 wt. % to 95 wt. % after the boiling and dilution steps, respectively.
Effects of Vegetation and Saturated Zone in Cascaded Bioretention on Enhancing Nutrient Removal
Authors: Osman Manal , Takaijudin Husna , Massoudieh Arash , Goh Hui Weng
Published: June 2022

Bioretention is a water management practice that is increasingly being applied for runoff quality control. Although previous Bioretention studies have used some techniques to improve nutrient removal, some nutrients still leach out. Therefore, this study used Cascaded Bioretention (CB) by connecting three Bioretention columns in series. The planted Bioretention Column was retrofitted by adding a subsurface drainage module (SDM) below the gravel layer to create a dual saturated zone. This study aimed to investigate the effect of the number of treatments, vegetation, and modified saturated zone on enhancing nutrient removal from agricultural runoff and to understand nutrient removal mechanisms. The removal efficiencies of NH3-N, NO3-N, NO2-N, and TN improved to 89.8%, 49.7%, 49.2%, and 53.4%, respectively. The only negative removal was ON, which significantly decreased by incorporating vegetation and a modified saturated zone. Increasing the number of treatments significantly enhanced TN and ON while maintaining stable removal for other nitrogen compounds. However, phosphorus was less sensitive to increasing the number of treatments. Nitrogen removal could be enhanced by different removal processes such as nitrification, denitrification, mineralization, assimilation by plant uptake, and Anammox. However, phosphorus removal was less complicated, as adsorption and infiltration are likely to be the main removal mechanisms.
Tetrabromobisphenol A (TBBPA) generation and removal paths analysis in printed circuit board (PCB) industrial wastewater: Lab-scale investigations
Authors: Du Hong , Shen Qi , Li Pu , Xing Dingyu , Dong Wenyi , Dong Zijun , Sun Feiyun
Published: June 2022

With the rapid development of printed circuit board (PCB) industry, the problem of the release of tetrabromobisphenol A (TBBPA) during PCB manufacturing processes was recognized and harmful to the receiving water body. In this study, TBBPA generation paths, fates in industrial wastewater in the PCB manufacturing processes were analyzed. Gas chromatograph-mass spectrometer (GC-MS) scanning results showed that the raw materials including solder mask ink, character ink and dry film mainly contained TBBPA. The PCB fabrication procedures, mainly including development, etching, stripping of inner layer manufacturing process, and pattern plating, tin-plating of outer layer manufacturing process, and development during the forming and surface treatment process would introduce TBBPA into wastewater. Flocculation and activated sludge process (ASP) that were commonly used for industrial wastewater treatment were selected to assess their removal capability for TBBPA in the wastewater, both which could remove more than 80% TBBPA. Low pH below 7, increased PAC and PAM dosages, and proper dosing during the slow-stirring stage could enhance the TBBPA removal of flocculation-sedimentation process. The ASP removes TBBPA mainly by the path of adsorption. High activated sludge concentration, low pH, medium-temperature and limited competitive adsorbates (NH4+, Cu2+) were beneficial to remove TBBPA by the ASP.
Uso de la metodología de aula invertida en el curso a nivel de licenciatura “Mantenimiento de software”
Authors: Saborio Laura
Published: June 2022

Los nuevos modelos educativos proponen un papel más activo del estudiante, que busca desarrollar habilidades de autogestión, responsabilidad, creatividad y trabajo en equipo. El objetivo es comprobar la anuencia de los estudiantes a una metodología de aula invertida, donde el profesor es un acompañante que apoya al estudiante para que logre analizar, evaluar, aplicar y crear, lo que lo llevará a recordar y comprender en una forma más completa y a su propio ritmo. Se realiza un encuesta en varios grupos del 2020 y 2021 para recoger las impresiones del modelo aplicado durante el curso. Se identifica que los estudiantes en un porcentaje importante apreciaron la nueva metodología y coinciden en que les ayuda a desarrollar las habilidades de autogestión necesarias para enfrentar el ambiente laboral. Se concluye que aunque hay que mejorar la resistencia al cambio en algunos estudiantes el modelo puede ser exitoso si se aplica de forma adecuada
PENERAPAN SISTEM VOUCHER PADA JARINGAN RT/RW-NET MENGGUNAKAN MIKHMON
Authors: Wahyudi Dona , Nalendra Adimas Ketut , Muhammad Ivan Wahyudi  , Heni Puji Lestari
Published: June 2022

Objektif.  RT/RW Net merupakan jaringan internet yang dikelola dalam lingkungan masyarakat kecil. Tanpa adanya pengaturan yang baik, waktu penggunaan layanan RT/RW Net menjadi tidak sama sesuai dengan kebutuhan masing-masing masyarakat.

Material and Metode.  Pengaturan lama waktu penggunaan layanan wifi RT/RW Net memanfaatkan sistem voucher. Sistem voucher ini diatur menggunakan aplikasi berbasis web bernama Mikhmon.

Hasil.  Pembagian waktu dalam voucher diatur selama 3 jam, 7 jam, dan 1 hari. Di dalam voucher tersebut terdapat kode voucher atau username dan password untuk menggunakan layanan wifi internet.

Kesimpulan.  Penggunaan voucher dalam RT/RW Net dapat membatasi waktu penggunaan layanan wifi internet sehingga menjadi lebih adil sesuai biaya yang dibayarkan.
KETELADANAN PASANGAN AKWILA PRISKILA DAN IMPLIKASINYA BAGI SUAMI ISTRI KRISTEN
Authors: Perangin Angin Yakub Hendrawan , Yeniretnowati Tri Astuti
Published: June 2022

Maksud Allah mendesain pernikahan suami istri adalah agar menyenangkan hati Allah. Kehidupan pernikahan yang digambarkan oleh pasangan suami istri  Akwila dan Priskila sudah menggambarkan maksud dan tujuan dari pernikahan yang diinginkan oleh Allah. Kehidupan dan pelayanan yang dilakukan oleh Priskila dan Akwila menunjukkan keteladanan bagi suami istri orang percaya pengikut Kristus Yesus dan terus masih relevan hingga saat ini dan masa mendatang untuk diterapkan. Hasil penelitian menunjukkan bahwa pasangan Priskila dan Akwila sangat layak dan patut menjadi teladan, profil (role model) karena kehidupannya yang istimewa, yaitu: Pertama, Pasangan pembuat tenda. Kedua, Pasangan yang saleh. Ketiga, Pasangan yang handal dan setia. Keempat, Rela mempertaruhkan hidup. Kelima, Menjadikan rumah tinggalnya menjadi rumah doa dan persekutuan. Implikasi nyata yang dapat diterapkan oleh suami istri Kristen, yaitu: Pertama, Suami istri harus taat kepada Tuhan. Kedua,  Suami istri harus mengasihi jemaat. Ketiga, Suami istri harus memimpin orang lain ke dalam ketaatan iman. Keempat, Suami istri harus memuridkan orang percaya dan pasutri lainnya. Kelima,  Suami istri harus mentransformasi pribadi, keluarga, gereja, dan budaya. Keenam, Suami istri harus terlibat pelayanan misi. Ketujuh,  Suami istri harus melayani melalui pekerjaannya.
Eski Uygurcada İkilemeler Üzerine – 2
Authors: ÖLMEZ Mehmet
Published: June 2022

Türkçede ikilemeler, ikilemelerin ortaya çıkışı, neyin ikileme neyin tekrar olduğu konusu kısaca bir önceki çalışmada ele alınmıştı. İkilemeler tarihî dönem Türk dilleri arasında en çok Eski Uygurca metinlerde karşımıza çıkan kullanım unsurlardır. Tarihî dönem metinlerdeki ikilemelerin bütününü ele almayı amaçlayan çalışmalara katkı niteliğindeki bu makalede bir önceki çalışmama ek olarak Eski Uygurcadan 1000’e yakın yeni ikileme ele alınmıştır.
On the heels of ägöčäk  in the Old Turkic-Khotanese glossary
Authors: NUGTEREN Hans
Published: June 2022

The so-called ‘Turkish-Khotanese word-list’ is a list of about a hundred Old Turkic words in Brāhmī script, some of which with Khotanese translations. Many of the entries were provided with brief etymological notes by its first editor Harold Bailey, which were corrected and expanded by later linguists. A couple of words remain unexplained. This paper will discuss the body part ehau’:cakä. Bailey compared it with Turkish ökçe ‘heel’ but this was rejected by later authors on phonetic grounds. Bailey’s proposal will be revisited and other connections will be investigated.
Capitalismo tecnológico, trabajo y Sur global
Authors: González Ortuño Gabriela
Published: June 2022

El conocimiento situado desde la perspectiva feminista y de las epistemologías del sur nos urge a pensar en los problemas que atraviesan la vida cotidianamente y que configuran actitudes que conforman, a través de la repetición sistemática, las pesadas estructuras que forman subjetividades.
EFFECTIVENESS OF GLOBALIZATION AND HUMAN CAPITAL ON MARKET & NET INCOME INEQUALITY IN BRICS COUNTRIES: A PANEL DATA ANALYSIS
Authors: Walayat Khaula , Qamar Dr. Mahmood Khalid , Iqbal Dr. Zahid Iqbal
Published: June 2022

This study scrutinizes the impact of defacto and dejure GLOB (KOF GLOB index 2018) on Income inequality on economically emerging countries; BRICS countries. The defacto GLOB indicates the estimate of GLOB including variables representing activities and flows; de jure estimate includes variables which show policies representing enable flows and activities. Our analysis separates the impact of globalization on net and market income inequalities. Pretax/transfer and the post-tax/transfer GINI indices were employed as the measures of income inequality. This analysis used balanced panel for BRICS countries for the period 1990-2015. Economic globalization both defacto and dejure showed positive sign that depicts a significant relationship with dependent variable. It explains that defacto political has positive sign and dejure political globalization decreases inequality while economic globalizations in both divisions have positive sign and significant impact on inequality. Interestingly, defacto social globalization has positive sign but dejure social has positive sign. Moreover, the purchasing power parity and age dependency both have negative sign and significant influence on inequality. These conclusions point out that social and political globalization may be a hindering factor for governance in these countries.
Vegetation Cover Variations in Central Iraq by Using GIS and Remote Sensing Data
Authors: Al-Turaihi Ahmed S. , Al-Zubaidi Jaafar H. , Manii Jwad K.
Published: June 2022

The variation in vegetation plays an important issue in the economy and the environment. The vegetation-covered area in Babylon, central Iraq for twenty years from 2000 to 2021 every five years has been investigated in this paper. The investigation has been done by using a Geographic Information system and remote sensing data. The investigation involved classifying the vegetation area into low, moderate, and density or high and low vegetation areas. The result shows that the vegetation-covered area has increased for moderate vegetation and density or high vegetation in 2021 to 990 km2 and 406 km2, respectively, from 803 km2 and 280 km2, respectively.
Sand Dunes Spectral Index Determination Using Machine Learning Model: Case study of Baiji Sand Dunes Field Northern Iraq
Authors: Al-Zubaidi Ehsan Ali , Al-Sulttani Ahmed H. , Rabee Furkan
Published: June 2022

Monitoring the propagation of dunes is essential for natural hazard management. Accurate dunes mapping is critical in this situation. Landscape elements such as vegetation, water, dunes, and built-up are commonly separated using spectral indices. The discovery of dune features using a spectral index is one of the most significant achievements in earth observation. In this research, it was suggested Drifting Sand Index (DSI) is a newly created index that can be used to extract the land of dunes. The DSI is calculated using the normalized difference between six Landsat-8 bands (B, R, G, NIR, SWIR-1, SWIR-2). The linear SVM algorithm was implemented using library (LibLINEAR) in the R software to calculate a new linear equation. Two versions of the index have been proposed, the first is the complete version (DSI-C), and the second is the reduced version (DSI-R). The suggested indices results were compared to four previously proposed spectral indices (NDSI-1, NDSI-2, CI, and NDSLI). The acquired results demonstrated that the DSI-C and DSI-R had a high ability to distinguish between sand and different land covers, such as vegetation, water bodies, and various soil types. The average overall accuracy for all levels of the DSI-R, DSI-C, NDSI-1, NDSI-2, CI, and NDSLI was 88.59%, 83.43%, 78.030%, 68.52%, 65.98%, and 56.490%, respectively. The average Kappa Coefficient for DSI-R, DSI-C NDSI-1, NDSI-2, CI, and NDSLI was 77.20%, 66.87%, 56.076%, 37.073%, 31.978%, and 13.011%, respectively.