Search

Euclidean geometry is a form of structural geometry grounded in a set of axioms from which all theorems are derived. This branch of mathematics encompasses two fundamental measurement types: angles and distances. It is widely recognized that the Euclidean axioms for measuring distances taught to students during primary, middle, and high school mathematics curricula establish the foundational concepts and structures of geometry they learn. The purpose of this article is to propose an educational resource that is designed for exceptional or gifted students in secondary school. This resource introduces alternative methods for measuring distances that differ from the Euclidean method. The objective of this educational material is to encourage students to think beyond the conventional Euclidean framework and explore alternative worlds of geometric structures. By broadening their horizons, students can recognize that geometric structures are not absolute but relative to the axioms and logical definitions that are agreed upon beforehand. [ABSTRACT FROM AUTHOR]

One of the factors that influence shrimp cultivation is the presence of algae. Precise knowing algae content in the pond is essential for effective management. Most research in the field of algae species carried out by researchers were observing Chlorella Sp. more than the other algae species, with a particular emphasis on substance concentrations. This study proposed non-invasive techniques for quantifying algae abundance, utilizing optical density (OD) and image processing (IP) methods. Three different algae species are frequently found in Indonesia i.e., Chlorella Sp., Thalassiosira Sp., and Skeletonema Sp. are used as sample. Those samples are cultured and prepared in a certain volume with a certain quantity. For experimental and observation purposes, those samples are then diluted into water based on percentage value. The experimental results provided RGB values, which were then used to establish polynomial equations. To verify these equations, two approaches were employed: synthetic image analysis and evaluation using additional data. The mean average error (MAE) was found to be 3.467 for IP method and 3.513 for OD method. It shows that IP method give better result compared to OD method in this study. However, it is very possible that the two methods will complement each other. [ABSTRACT FROM AUTHOR]

Purpose: This study investigates the influence of gantry and collimator angles on the dosimetric leaf gap (DLG) and leaf transmission factor (LTF) in a Varian LINAC equipped with rounded‐end multi‐leaf collimators (MLCs). While Varian guidelines recommend DLG measurements at zero degrees for both gantry and collimator, this research aims to address the knowledge gap by assessing DLG and LTF variations at different gantry and collimator angles. Methods: Measurements were conducted using a Varian TrueBeam LINAC with a Millennium 120‐leaf MLC and Eclipse TPS version 16.1. The beams utilized in this study had energies of 6 MV, 10 MV, 6 FFF, and 10 FFF. LTF and DLG were determined using ionization chambers in solid water phantoms at various gantry angles (0°, 45°, 90°, 135°, 180°, 225°, 270°, and 315°). For each gantry angle, measurements were also taken at various collimator angles (0°, 45°, 90°, and 315°). Dosimetric impacts were evaluated through VMAT Picket Fence tests and patient‐specific verification using portal dosimetry for 10 clinical VMAT plans. Results: LTF values showed no significant variation across gantry and collimator angles. However, DLG values exhibited notable differences depending on the gantry angle and were independent of the collimator angle. The highest DLG value was observed at a gantry angle of 270 degrees, while the lowest was at 90 degrees. The AXB DLGAverage (averaging seven measurements of DLGs at different gantry angles) model demonstrated the best agreement between measured and calculated dose distributions, indicating the importance of considering averaged DLG values across multiple gantry angles for accurate dose calculations. Conclusion: Our study highlights the variability of DLG with gantry angle alterations, contrary to Varian guidelines recommending DLG measurements at zero gantry angle only. We advocate for utilizing an averaged DLG value from measurements across multiple gantry angles, as outlined in our methodology. [ABSTRACT FROM AUTHOR]

Copyright of Syntax Idea is the property of Ridwan Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background: Coronary artery bypass grafting (CABG) surgery is a common procedure for managing multi-vessel coronary artery disease to revascularize the myocardium. Among the various conduits used, the left internal mammary artery (LIMA) is preferred due to its better long-term patency rate. However, CABG procedures involving LIMA may result in rare but serious complications, such as avulsion of the LIMA post-CABG, which leads to disruption of blood flow to the myocardium and the development of fatal cardiac tamponade. Case presentation: We hereby present a unique case of spontaneous avulsion of a LIMA graft to the left anterior descending artery (LAD) away from the site of anastomosis, twenty-four hours following CABG surgery in a 67-year-old male patient. Emergency re-exploration and repair of the LIMA with interposition vein graft were performed and resulted in successful stabilization of the patient's critical condition. However, this was followed by a complicated recovery period involving atrial fibrillation, acute kidney injury, and wound infection. Conclusion: Avulsion of LIMA graft following CABG is rare, yet a fatal complication that requires high clinical suspicion and prompt management. Avulsion has been reported a few times in literature following both minimal invasive and conventional CABG. Understanding the etiology, clinical presentation, and management of this complication is crucial to avoid catastrophic outcomes. [ABSTRACT FROM AUTHOR]

Developing electronic platforms during education disruptions, particularly during the COVID-19 pandemic, had become crucial to addressing educational gaps. Research has shown technology's significant contribution to improving teaching and learning methods in labs, whether theoretical or experimental. This study creates an e-laboratory platform for managing university-level physics-chemistry practical work. The aim is to measure the platform's impact on students' experimental learning and identify integration and usage constraints. Our methodology was both quantitative and qualitative, conducted in a public institution. Two hundred forty students from two departments completed the questionnaire, and 25 teachers participated in semi-structured interviews. Findings revealed that e-laboratory simulations facilitated comparing theoretical solutions with actual lab practices and achieved goals in terms of communication pace, pre-lab content exchange (video conferences), post-lab experiment records, and evaluation sessions providing feedback for student progress tracking. However, insufficient computer equipment, technical problems during experiment setup, and momentary video conference issues hindered effective communication. This study guides researchers in enhancing adult education program efficiency. Considering online learning's adaptability and cost-effectiveness, improving learning effectiveness can justify continued use of online teaching beyond the pandemic by universities. Hence, electronic laboratories and the exploration of their integration transcend the realm of university scholars; they stand as a reservoir of potentiality for the perpetual advancement of professionals across diverse domains, affording a continuum of erudition throughout one's lifetime. [ABSTRACT FROM AUTHOR]

The application of digitalization skills to social media can affect the impact of business on MSME performance. The purpose of this study is to test and find out digital technology in the application of digitalization skills can mediate the impact of business on MSME performance. This study uses a quantitative approach with the design of questionnaire methods and explanatory research, with purposive sampling on the types of products marketed, MSMEs that make sales using social media and e-commerce, and MSMEs that have conducted entrepreneurship training, a sample of 268 MSMEs with a response rate of 50 MSMEs. The analysis used is SmartPLS. The results of the analysis show that the application of digitalization skills partially mediates the impact of business on MSME performance. Digital technology is an intermediary variable that is able to compete in the global market, because MSME players can do online marketing so that product sales can increase and digital technology is able to process products more efficiently by utilizing technology, and can distribute products more effectively. Business impact using the strategies applied, namely communication with media selection, competitive advantage refers to business competition, and innovation for product development. Financial performance has increased sales, non-financial performance has experienced accuracy in sales targets and develops business through the potential of human resources owned. [ABSTRACT FROM AUTHOR]

This study aims to describe the design of prayer practice learning activities in the development of gross motor and spiritual intelligence. This research is a type of qualitative research using field research methods. The data collection techniques used were observation, interview and documentation. The data was analysed by reducing data, displaying data and drawing conclusions. The subjects of this study were children aged 5-6 (N=23) RA Al Wardah Majalengka. The results showed that: 1) Learning design: a) Purpose: to develop the developmental aspects of moral religious values and physical motor skills, b) Material: recognition of the obligatory prayer, time, number of rakaats, intention, movement, prayer recitation. c) Methods of conversation and demonstration. e) Evaluation of the process and children's performance. 2) Gross Motor Development Develops as expected, children are able to perform prayer movements (takbir, standing, bowing, prostration, sitting between two prostrations, qunut, tasyahud, salam). 3) Children's spiritual intelligence develops as expected, children are able to memorise, recall and say prayers / prayer readings, children are able to perform prayer. Its activity positively impacts gross motor development, spiritual intelligence, cooperative attitudes, language skills and moral and religious values of early childhood. [ABSTRACT FROM AUTHOR]

The purpose of this research was to investigate the performance of photovoltaic modules when used in different heating temperatures. The heating temperature variants used were room T, TA = 50 °C, TB = 60 °C, and TC = 70 °C. The lamp capacity used was 5 watts with a bulb-type lamp. In addition, the circuit used was a series circuit. This research done on the effect of different temperatures of the heater placed under the photovoltaics showed that when there was an increase in the photovoltaic temperature, the voltage, current, power, and efficiency decreased. Therefore, it is necessary to limit the temperature used for photovoltaics. [ABSTRACT FROM AUTHOR]

Copyright of Terra Latinoamericana is the property of Sociedad Mexicana de la Ciencia del Suelo A.C. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Membrane-based technologies have been widely used for surface water treatment. Yet, many aspects of this technology can still be improved. This study aims to develop polyethersulfone (PES)-based phase-inverted membranes to improve the morphological structure, antimicrobial properties, and performance by incorporating Poloxamer 188 and patchouli oil as the dope solution additives. The performance of the membrane was assessed for filtration of well water and by evaluating the turbidity rejection. This study used a phase inversion technique in the membrane manufacturing process with PES, PES + P188 + 1 wt% PO, PES + P188 + 3 wt% PO, and PES + P188 + 7 wt% PO. The characteristics of the obtained membranes were studied in terms of structure and morphology, microbial growth prevention, hydrophilicity, filtration flux, and ability to reduce the turbidity of well water samples. Results show that the addition of Poloxamer 188 and patchouli oil in the dope solution turned the membrane more porous (up to 73.24% increase in porosity) and more hydrophilic (the water contact angle (WCA) was lowered from 70 to 37°). The additives also increased the antibacterial properties of the membrane, as shown by up to 97.5% reducing Escherichia coli colonies on the membrane surface. Overall, the results demonstrate significant improvements in the characteristics and performance of PES membranes by incorporating Poloxamer 188 co-polymer and patchouli oil as additives in the dope solution. The modified membrane was successfully applied to remove turbidity from a water sample. The turbidity parameters in well water samples could be fully reduced in nine out of ten samples by the membrane containing 7 wt% PO additives. [ABSTRACT FROM AUTHOR]

Lipoma is a benign soft tissue tumor that is mostly found in the trunk, however, lipomas of the thumb are rarely reported, around 1% of cases. We report a case of a Saudi male aged 32-year-old who presented with a progressive left thumb swelling for a long time. The aim is to add more cases to the literature and to consider it as a differential. [ABSTRACT FROM AUTHOR]

The removal of nitrate and phosphate ions from wastewater has a major concern nowadays. It is necessary to remove nitrate and phosphate ions from wastewater. Adsorption becomes a promising method for phosphate and nitrate ions removal from wastewater because of their availability, low cost, stability and high adsorption capacity. Fume Dust from an Electric Arc Furnace is an industrial waste produced from El-Masryeen Steel factory which is used as an adsorbent for simultaneous removal of nitrate and phosphate ions from an aqueous solution. Surface characterization is performed for the Fume Dust from an Electric Arc Furnace waste before and after adsorption process to ensure nitrate and phosphate ions adsorption and to predict the adsorption mechanisms for each of them. The effects of changing pH, initial nitrate ion concentration, initial phosphate ion concentration and adsorbent dose on the adsorption process efficiency are studied. Response- Surface Methodology-Central Composite Design statistical method is performed to reach the best conditions of the nitrate and phosphate ions removal percentages at neutral pH using Design Expert Software. The maximum nitrate and phosphate ions removal percentages (52.74 % and 92.38 %) are achieved using Fume Dust from an Electric Arc Furnace waste under these conditions; pH ~ 7, initial nitrate ion concentration = 6 mg/L, initial phosphate ion concentration = 1 mg/L, adsorbent dose = 6.5 g/L and contact time = 90 min. [ABSTRACT FROM AUTHOR]

Background: Postoperative pulmonary complications (PPCs) often occur after cardiac operations and are a leading cause of morbidity, inhibit oxygenation, and increase hospital length of stay and mortality. Although clinical evidence for PPCs prevention is often unclear and crucial, measures occur to reduce PPCs. One device usually used for this reason is incentive spirometry (IS). The aim of the study is to evaluate the effect of preoperative incentive spirometry to prevent postoperative pulmonary complications, improve postoperative oxygenation, and decrease hospital stay following coronary artery bypass graft (CABG) surgery patients.Methods: This was a clinical randomized prospective study. A total of 80 patients were selected as candidates for CABG at An-Najah National University Hospital, Nablus-Palestine. Patients had been randomly assigned into two groups: incentive spirometry group (IS), SI performed before surgery (study group) and control group, preoperative spirometry was not performed. The 40 patients in each group received the same protocol of anesthesia and ventilation in the operating room.Result: The study findings showed a significant difference between the IS and control groups in the incidence of postoperative atelectasis. There were 8 patients (20.0%) in IS group and 17 patients (42.5%) in the control group (p = 0.03). Mechanical ventilation duration was significantly less in IS group. The median was four hours versus six hours in the control group (p < 0.001). Hospital length of stay was significantly less in IS group, and the median was six days versus seven days in the control group (p < 0.001). The median of the amount of arterial blood oxygen and oxygen saturation was significantly improved in the IS group (p < 0.005).Conclusion: Preoperative incentive spirometry for two days along with the exercise of deep breathing, encouraged coughing, and early ambulation following CABG are in connection with prevention and decreased incidence of atelectasis, hospital stay, mechanical ventilation duration and improved postoperative oxygenation with better pain control. A difference that can be considered both significant and clinically relevant. Trial registration Thai Clinical Trials Registry: TCTR20201020005. Registered 17 October 2020-retrospectively registered. [ABSTRACT FROM AUTHOR]

Copyright of Multi-Knowledge Electronic Comprehensive Journal For Education & Science Publications (MECSJ) is the property of Multi-Knowledge Electronic Comprehensive Journal For Education & Science Publications (MECSJ) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The present study examines the relationship between leadership style, school climate, and students' persistence in middle and high schools in Arab society in Israel. Various studies have shown that leadership style, in general, and school climate, in particular, impacts the students academically, emotionally, and socially. Moreover, they are even considered vital factors that influence students' persistence or dropping out of the education system. Therefore, the purpose of the present study focuses on examining the relationship between leadership style, school climate and students' persistence in middle and high schools in Arab society in Israel. The current study was conducted in the quantitative methodology, in which 100 teachers from five in middle and high schools from the Arab community in the north of the country have participated. The researchers used two types of questionnaires to collect data: the first measures school climate, whereas the second examines the principals' leadership style The findings of the study indicate positive associations between a human-centered leadership style, ethical school climate and students' persistence at school. This finding points to the importance of nurturing a moral school climate and a human-centered leadership style as crucial factors influencing student persistence. [ABSTRACT FROM AUTHOR]

Rice straw is one of the most common agricultural wastes due to its large production amounts. Energy valorization of rice straw is a technology used for nitrate removal as the produced ashes used to generate the adsorbent by means of an alkali dissolution followed by acid precipitation. The novelty of the proposed process is that the production of the nano zero-valent iron supported acid-activated rice straw (AARS-nZVI) adsorbent is carried out without the energy valorization process but, through an acid activation for rice straw followed by precipitation of nZVI particles on its surface. The new adsorbent synthesis, characterization and application were studied. Initial solution pH, initial nitrate concentration, adsorbent dose and contact time factors were considered during the investigation of nitrate removal efficiency using Central Composite Design (CCD) method. The optimum nitrate removal 91.62 % is obtained at initial pH of 7, initial nitrate concentration of 6 mg/L, adsorbent dose of 3 g/L and contact time of 180 min by using numerical optimization. [ABSTRACT FROM AUTHOR]

Introduction: Complications following Cardiopulmonary resuscitation (CPR) are rare and usually follows a vigorous CPR or in special cases like pregnancy are due to lack of knowledge and clinical practice of how to preform CPR in pregnancy. One of this complication is diaphragmatic rupture with herniation of abdominal organs. Surgical intervention needs to be planned carefully in multidisciplinary team approach and requires fine surgical techniques for better outcome. There are few reported cases of diaphragmatic rupture after Cardiopulmonary resuscitation but none in pregnant woman.Case Presentation: We report a rare case of diaphragmatic rupture in a 29-year-old pregnant patient who experienced a full-blown diaphragmatic defect and herniation of the abdominal organs into the thoracic cavity, as a complication of CPR. Following careful assessment and diagnosis, the patient underwent urgent laparotomy with reduction of the contents and primary closure of the defect. One year follow up was satisfactory. To the best of our knowledge, this is the first reported case of diaphragmatic rupture with herniation of the abdominal organs following CPR in a pregnant woman in the literature.Conclusion: The application of external cardiac massage through CPR is a life-saving procedure for the management of cardiac arrest. Common complications related to CPR include rib fractures, sternal fractures and haemothorax. Diaphragmatic rupture with herniation of the abdominal organs is a rare complication, having been reported only once in the literature (Sabzi F, Faraji R, Tanaffos 16:170-172, 2017); however, it represents a serious and life-threating event. Thus, careful evaluation of the patient by a multidisciplinary team and prompt intervention is recommended in order to improve outcomes. [ABSTRACT FROM AUTHOR]

We present Arabic texts about supernovae SN 1572 and SN 1604. The short observational reports were found in the Yemeni history book entitled Rawḥ al-Rūḥ written by cĪsā b. Luṭf Allāh b. al-Muṭahhar. The text about SN 1604 specifies the location of a new star at the beginning of the zodiacal sign of Sagittarius, consistent with SN 1604 in the constellation of Ophiuchus. It was observed in fall a.d. 1604 for some 40 days (probably limited by its heliacal setting after around a.d. 1604 22 November). The object is called a najm (star) of the nayāzik (transient celestial objects), from which we can conclude that it was a tailless and/or stationary new star (rather than, e.g., a comet). It was specified to be as (large/bright as) Jupiter, consistent with the supernova in a.d. 1604 October and November The text confirms other reports about SN 1604. Furthermore, a short text reports a new star (najm) in the north-east, larger than Venus, observed in the year a.h. 980 (a.d. 1572 May to 1573 May), connected to the death of a leader on a.d. 1572 9 ± 2 November; this could well be SN 1572, otherwise observed to be as bright as Venus since a.d. 1572 6 November. These new findings may indicate that more Yemeni reports about Galactic supernovae can be uncovered. The description of the new star of a.d. 1604 as najm (star) of the nayāzik (transient celestial objects) and of the comet of a.d. 1577 as “a star [najm] … of the nayāzik, with a tail … with a visible movement” shows that the author distinguished between cometary and star-like transient celestial objects. [ABSTRACT FROM AUTHOR]

Introduction: Mercury intoxication is a widespread problem as mercury is used in the manufacture of thermometers, batteries and electrical switches. It forms one of the most diffusible environmental pollutants. Mercury has a nephrotoxic effect which could occur at low exposure levels. Verapamil could help in the treatment of mercuric toxicity. The aim of the study was to examine the protective and therapeutic effect of concomitant verapamil on chronic mercuric chloride nephrotoxicity. This was done through histological, morphometric and transmission electron microscopic studies. Material and methods: Sixty adult male albino rats were used. The rats were divided into a control group and 4 experimental groups: group I (HgCl2), group II (concomitant HgCl2 and verapamil), group III (HgCl2 withdrawal) and group IV (HgCl2 withdrawal then verapamil treatment). Results: Chronic administration of HgCl2 resulted in cortical nephrotoxic effects in the form of glomerular sclerosis, acute tubular necrosis and interstitial inflammatory cellular infiltration which eventually ended in interstitial fibrosis. Concomitant use of verapamil with HgCl2 improved the previous pathological changes partially. The findings in group III were less severe compared to group IV. The persistence of the pathological findings in these groups reflects the irreversible nephrotoxic changes caused by chronic HgCl2exposure. Conclusions: We concluded that the concomitant administration of verapamil has a much better effect in minimizing the nephrotoxic effect caused by chronic HgCl2 than its therapeutic administration. So, we recommended the prophylactic use of verapamil in suspected cases of chronic mercuric chloride nephrotoxicity to preserve renal function. [ABSTRACT FROM AUTHOR]

Service discovery is indispensable to ad hoc networking where establishing a stand-alone and self-configurable communication environment is the main objective. This paper concentrates on designing a distributed service discovery model for service sharing among diverse mobile devices in mobile ad hoc networks (manets). This model is built on top of the network layer of the TCP/IP stack and benefits from the up-to-date routing information enabled by proactive routing protocols that attempt to keep the information in the routing tables of the mobile nodes current. The designed system is based on storing service descriptions in selected nodes that are searched in accordance to the proposed Minimum Distance Packet Forwarding (MDPF) algorithm. In addition to identifying and analyzing the design parameters of the system, this paper studies the delay and traffic performance using analytical derivations and experimental evaluations based on the ns-2 network simulation software. The system is intended to be used in a collaborative manet environment whereby a mobile node can consume services, share them, or facilitate such sharing by helping other nodes find them. [ABSTRACT FROM AUTHOR]

Membrane properties are highly affected by the composition of the polymer solutions that make up the membrane material and their influence in the filtration performance on the separation or purification process. This paper studies the effects of the addition of pluronic (Plu) and patchouli oil (PO) in a polyethersulfone (PES) solution on the membrane morphology, membrane hydrophilicity, and filtration performance in the pesticide removal compound in the water sample. Three types of membranes with the composition of PES, PES + Plu, and PES + Plu + patchouli oil were prepared through a polymer phase inversion technique in an aqueous solvent. The resulting membranes were then analyzed and tested for their mechanical properties, hydrophilicity, antimicrobial properties, and filtration performance (cross-flow ultrafiltration). The results show that all of the prepared membranes could reject 75% of the pesticide. The modification of the PES membrane with Plu was shown to increase the overall pore size by altering the pore morphology of the pristine PES, which eventually increased the permeation flux of the ultrafiltration process. Furthermore, patchouli oil added antimicrobial properties, potentially minimizing the biofilm formation on the membrane surface. [ABSTRACT FROM AUTHOR]

Arginine (L-arginine), is an amino acid involved in a number of biological processes, including the biosynthesis of proteins, host immune response, urea cycle, and nitric oxide production. In this systematic review, we focus on the functional role of arginine in the regulation of endothelial function and vascular tone. Both clinical and preclinical studies are examined, analyzing the effects of arginine supplementation in hypertension, ischemic heart disease, aging, peripheral artery disease, and diabetes mellitus. [ABSTRACT FROM AUTHOR]

The original article [1] contained an error whereby the author, Ahmad Darwazah's name was spelt incorrectly. [ABSTRACT FROM AUTHOR]

Background: Idiopathic pulmonary artery aneurysm is a rare anomaly with only a handful reports in the literature. It is often asymptomatic, while the first presentation could be severe hemoptysis or death. Surgical intervention needs to be planned carefully with a multidisciplinary team approach to secure optimal outcome. We hope to spread our experience with such cases and to encourage other surgeons worldwide to deal surgically with these cases when its indicated.Case Presentation: A 47 years old man presented to our institution after three episodes of hemoptysis, echo demonstrated good left ventricle (LV) systolic function, normal right ventricle (RV) size and function, Chest computed tomography (CT) revealed aneurysmal dilatation with pending rupture of the pulmonary artery trunk (4.5 cm), the left pulmonary artery (6 cm) and the right pulmonary artery (2.3 cm). The patient successfully underwent replacement of Pulmonary artery trunk, left pulmonary artery and right pulmonary artery by Wovex Prosthetic graft (28 mm). The patient discharged home on the eight postoperative day in good clinical condition .Conclusion: With this case report we wish to emphasize the need for a careful multidisciplinary approach given the complex and rare nature of the reported pathology. [ABSTRACT FROM AUTHOR]