bluuebunny/crossref_metadata_2025 huggingface dataset:
Friction Stir Welding of Dissimilar Aluminium Alloys for Vehicle Structures
Authors: Ramesha K. , Sudersanan P.D. , Gowda A.C. , Santhosh N. , Jangam S. , Manjunath N.
Published: February 2022

Welding process in vehicle structures has gained importance, especially for better strength and mechanical properties. Hence, there is vast research going on in the domain of newer welding techniques. Friction Stir Welding (FSW) is one of them. FSW is used in this research to join two different grades of aluminium alloys by varying the process parameters. The process parameters are optimized based on the Design of Experiments (DoE) and the Taguchi techniques. From the experimental findings for different process parameters, the optimized set of conditions involving the normal, transverse forces and the torque are determined. Further, the process methodology is validated.
Computational Analysis of Thermal Performance of Inline Pin Fins Over the Wedge Duct and Combustion Chamber Wall
Authors: Rajeshkumar P. , Shankar G. , Mohankumar K. , Patil Rahul , Pavankumar A. , Pappukumar P. , Ahmed Fayaz
Published: February 2022

This paper provides a computational fluid dynamics (CFD) study of the wedge-duct over turbine blade for flow and heat transfer coefficient characteristics. The influence of flow parameters on drop in pressure and heat transfer is investigated using Reynold's numbers of 10000, 20000, and 30000. Two cases of air coolant at 65ºC (Case 1) and 100ºC (Case 2) are considered. Case 1 delivers a low friction coefficient and a better thermal performance parameter, which improves heat transfer of the disturbed pin-fin layout within the wedge duct. Combustion chamber internal walls experience exceptionally high temperatures and heat flux. As a result, arrayed pin fins can be used to improve the heat transfer and cooling efficiency.
Influence of Heat Flux on the Thermohydraulic Performance of Microchannel Heat Sinks using Computational Fluid Dynamics
Authors: Tiruveedula Mohan Sukumar , Gadekula Rajeshkumar , Dondapati Raja Sekhar
Published: February 2022

Microchannel heat sinks (MCHS) have been found to be showing better performance in terms of heat transfer rates at a penalty of pressure drop. This higher-pressure drop would contribute to the requirement of higher pumping power. In this work, an investigation is carried out on a rectangular microchannel heat sink at a constant aspect ratio (AR) of 11.44 for a cross sectional area of 0.20mm2 at different heat fluxes ranging from 20W/cm2 to 100W/cm2. It is found that the effect of variation of heat fluxes for a cross sectional area of 0.20mm2 shows significant effect on the thermohydraulic performance of MCHS. In order to solve the governing equations of fluid flow through MCHS, ANSYS-FLUENT is used. The flow is considered to be laminar, since the operating Reynolds number found to be in the range of 200 to 1000. The obtained results are validated with numerical and experimental results available in the literature. Further, grid independence studies have been performed to eliminate errors in the simulation. The hydraulic characteristics such as pressure drop, pumping power and thermal characteristics such as thermal resistance have been investigated computationally.
Water Absorption and Thickness Swelling Behaviour of Woven Roselle Fibre Epoxy Composites
Authors: Kazi Atik Mubarak , Ramasastry D.V.A. , Waddar Sunil , Shaikh Tausif Mohmedsharif , Tamboli Ayub A.
Published: February 2022

The effect of roselle fabric weave pattern on water absorption and thickness swelling behaviour of woven roselle fibre composites has been investigated. Roselle fabrics with various weaving design such as plain, twill, satin and basket are used in this study. All composites are produced using hand layup process. The water absorption and thickness swelling behaviour of all composites are studied as per ASTM standards. The test samples were immersed in distilled water at room temperature and change in weight and thickness of the test samples recorded at every 24 hour time interval. For all composite samples, saturation in water absorption and thickness swelling was observed after 264 hours of water immersion. Result revealed that the plain-woven composite yields higher resistance to water absorption and thickness swelling than other types of composites.
Fabrication and Mechanical Behaviour of Al-6061/Al2O3 Metal Matrix Composite Fabricated Through Powder Metallurgy Technique
Authors: Gurusamy P. , Muthuraman V. , Lokeshkumar J. , Hari Krishna Raj S.
Published: February 2022

Aluminium-based composites exhibit better mechanical properties in automobile and aircraft industries. Al 6061 alloys have promising machinability and fracture toughness. Al2O3 is used as reinforcement and added with Al-6061 alloy. In this work, various processing methods such as stirring, compacting and heat treatment have been attempted through the powder metallurgy method. The reinforcement for the alloy is 3%, 6%, 9% and 12% by weight. Four samples were prepared for the composite. The application of pressure for the sample during compacting is calculated. After compacting, the heat treatment process is carried out.
Combustion Characteristics of Multicomponent Fuel Droplets
Authors: Chandra Ch. Naresh , Lanjewar Donetra , Vaishnavi Mankala , Nandagopalan Purushothaman
Published: February 2022

The present study investigates the combustion characteristics of the multicomponent diesel-water (D-W) emulsion fuel droplets. The stable blends obtained by using Surfactant, Span-80 (s) and three different fuels viz., WD1 (D-95%, W-3%, S-2%), WD2 (D-94%, W-4%, S-2%) and WD3 (D-96%, W-3%, S-1%) are subjected to the pendant mode of droplet combustion in the ambient conditions. The blend's stability depends on surfactant and water compositions. WD1 exhibited a higher viscosity W/s ≥ 1 at near-boiling point of the dispersed fluid. The higher viscosity droplets resulted in fewer secondary atomization. WD3 with lower viscosity (W/s >1.5) exhibited multiple cycles of the micro-explosion events. The cycles of micro-explosion depend on water to surfactant concentration. The blend with lesser surfactant exhibited the lesser cycles of explosion events. The regression rate of the droplets was fitted using d2-law. WD1 possesses the least burn time. The vapors of low volatile fluid, i.e., water vapor were trapped inside emulsion the droplets. Upon receiving the constant heat from flame surface, the surface of the droplets gets highly corrugated due to the capillary oscillations. Subsequently, the trapped bubbles of the less volatile fluid are ejected out as the daughter droplets. These ejections are more predominant in higher surfactant concentrations. The ejections frequency reduces with an increase in water %. This enabled the rapid burning of the droplet when compared to base fuel combustion.
Design and CFD Analysis of a Rear Wing of a Motorsport Car
Authors: Om Raj R.R. , Tharakaram Naggari , Prakash N.
Published: February 2022

The rear wing of a motorsport car is one of the 3 main components to produce the downforce required by the car to take a corner with the maximum speed possible. This paper aims to design and analyse the rear wing of a motorsport car. The design consists of a lower wing element (main plane), an upper wing element (flap) and the endplates. In this study, the rear wing is designed as per the FIA 2020 F1 technical regulations and is analyzed using Computational Fluid Dynamics (CFD). The rear wing model is designed using Autodesk Fusion 360 and the analysis is made using Autodesk CFD. Benzing airfoils were used in this project as the wing elements. The results of the stock and modified model are compared and discussed. The results show how the modified version of the endplate has better aerodynamic properties than the stock model. The whole rear wing assembly has also been analysed and the results were discussed.
Computational Analysis of 2D Transition Inlets for Supersonic Capture
Authors: Giri Prasad T. , Dinesh Kumar G. , Patel Ratna , Mounika Cherukuri , Gowri Shankar D.
Published: February 2022

Scramjets are the futuristic propulsion technology for supersonic and hypersonic flights. Transition inlets form one of the major technologies to make the Scramjets more utilizable in reality. This paper deals with the 2-dimensional computational analysis of the supersonic capture of the transition inlets using the finite volume approach of ANSYS. The main objective of this paper is to demonstrate the advantage of the transition inlets over the conventional ramp inlets. This study involves sharp-edged ramp, smooth-edged ramp and transition ramp. Simulation of the inlet at supersonic capture has been done using the SST k-omega turbulence model along with a density-based solver with Roe flux. The performance of the inlet is calculated in terms of the total pressure recovery. Along with this the static pressure, Mach number variation through the inlet and the internal reflected shocks at the isolation chamber are studied. The 2D study of the transition inlet is highly important because the effects of the notch can be studied in depth using the 2D models with minimal number of errors. The comparative study of the 2D transition model helps to validate the advantage of the transition ramps over the conventional ramps. Supersonic capture analysis is inevitable as it determines the starting condition of the inlet. In this paper, the analysis is done for the Mach numbers of 2, 3, and 4.
Modelling and Analysis of High-Speed Angular Contact Ball Bearing
Authors: Nithesh Sharan G. , Varun Ram G. , Shravankumar C.
Published: February 2022

Angular contact bearings are of primal importance in accommodating rotational mechanisms with high-speed characteristics. Their applications are centric to heavy axial and radial loads sustaining thrust loads to a single direction. In high-speed applications, factors such as centrifugal force, gyroscopic moments and relative displacements in various geometric features of the bearings are to be taken into consideration. This study focuses on establishing the contact angles, contact forces and spin speed for angular contact bearing to withstand varied rotational angular velocities. The forces experience a non-linear variation with respect to the body stiffness thus necessitating the involvement of numerical methods to converge at precise solutions through each juncture. The outer raceway of the bearing is accepted to be static with respect to the inner raceway as the input shaft for any application is predominantly affixed to the inner raceway of the angular contact bearing. Geometrical variations are determined under combined load conditions to simulate the natural working of the bearing at accelerated speeds. The analyses involve results for spatial parameters which are iteratively solved for each of the rolling elements in the bearing taken into concern. The spin speeds of the rolling elements are shown to dampen and exponentially increase with respect to their angular positions. The outputs manifested through this work can be utilized to accurately predict shift of salient design attributes of an angular contact bearings through low and high-speed applications.
Numerical Analysis of Modified Spike in Ramjet Engine
Authors: Santhosh S. , Chandran Shyam , Dinesh Kumar G.
Published: February 2022

The main objective of this paper is to study the efficiency of ramjet engine by optimizing the inlet spike geometry. The engine inlet is of primary importance for all air-breathing propulsion engines. Its major function is to collect the atmospheric air at free stream Mach number, slow it down and to compress it efficiently. The geometries used here are planar with different Mach numbers 1.5, 2, 3 and 3.5. The first inlet has a cone of with four types of different half cones angles of 14°, 15°, 16° and 17° respectively. In the second modified inlet, a hole of 0.3 mm is made at mid-section of the cone on 2 symmetrical sides of the cone. It is observed that the hole allows the inflow of oblique shock i.e., the oblique shock is absorbed through the holes, followed by normal shock which then expands behind the length of the cone thus increasing the mass flow rate for adequate combustion. In the last modified inlet, the cone is step ended due to which the mass flow converges as it flows along the slope of the steps. The designing is done in solid works and the analysis of inlet spike is done in 2-D with the help of ANSYS software. It is finally concluded that the out of the four different cone angles analysed, 170 cone angle for M = 1.5 showed least pressure recovery and the same geometry is analysed for two different modified spikes where the cone with hole (cavity) showed huge rise pressure for the same conditions.
Wear and Tensile Behaviour of Aluminium Matrix Hybrid Composites
Authors: Arunprasath S. , Veeranaath V. , Pavan Teja K. , Prasad Bijay
Published: February 2022

Aluminium-based hybrid composites are well known for their great strength and wear resistance. In the aluminum matrix, the inclusion of reinforcements improves the strength and hardness. So, it is essential to study the tensile strength and wear behaviour of the developed samples. In this paper, aluminium-based hybrid composites are fabricated by incorporating graphite and Al2O3 in the aluminum base. The samples were prepared with varying reinforcement content and process constraints in a stir casting machine. The sliding behaviour was studied by measuring the wear rate by employing Taguchi analysis.
Effect of Wing Geometric Parameters on Flutter Speed
Authors: Akshayraj N. , Sriram A.T.
Published: February 2022

Fluid-Structure Interaction (FSI) of an aircraft wing is given much importance in recent days due to safety in operation while reducing structural weight of the wing. Any design modification or newer design of an aircraft is expected to have improvements in overall performance. The geometric variation of the wing for aerodynamic performance is given importance before considering it for any major changes. It is important to know the effect of wing modification on flutter speed. Analytical and semi-empirical tools were developed in earlier days to estimate the flutter speed. Currently, coupled Computational Fluid Dynamics (CFD) and Computational Structural Dynamics (CSD) simulations are possible due to development in numerical methods and availability of increased computing power. Ansys-Multi Field Solver is used in this study. A well-known AGARD 445.6 wing geometry is considered for transonic Mach number of 0.901. The predicted onset flutter speed, 297m/s, has shown good agreement with the experimental data. A parametric study on reduction of 10% wing thickness predicted 1% reduction in flutter speed and increase of 10% wing thickness predicted, 5% more on flutter speed. Increase in wingspan by 10% has predicted reduction on the flutter speed of 2% and decrease in wingspan by 10% has predicted increased flutter speed by 5%. Increase in wing sweep by 10% increases flutter speed by 2% and reduction in sweep by 10% has decreased flutter speed by 5%.
Anadolu Türk Kültüründe Buğday/Başak ve Görsel Dile Aktarımı
Authors: ALTIER Semiha
Published: February 2022

İnsanlığın ekimini ilk yaptığı, temel besin kaynağı olan buğdaya, zaman içinde tek veya çok tanrılı dinlerde bazı anlamlar yüklemiştir. Kutsiyet atfedilen ekmeğin de hammaddesi olan buğday, pagan toplumlarda tanrılara sunulan kutsal bir yiyecek, aynı zamanda tarım/bereket tanrı/tanrıçalarının atribüsü olarak karşımıza çıkar. Kadınla da özdeşleştirilen ve yine doğum, soy, verimlilik, bolluk, bereket kavramına gönderme yapılan bu bitki, Türk ve İslam halk kültüründe bu anlamlarını koruyarak günümüze devrolmuş; birçok inancın ve ritüelin kaynağında da yer almıştır. Anadolu’da kem gözlere karşı buğday başaklarından nazarlık yapılarak, ayrıca haneye şans/uğur, bolluk/bereket getirmesi için de evlerin duvarlarına asıldığı görülür. Buğday aynı zamanda bir Orta Asya Türk geleneği olan saçının da içindedir ve günümüzde gelinlerin üzerine saçılmaktadır. Aşure ve Nevruz’la ilişkilendirilen buğday, bebeklerin diş hediği ve kırklamasındaki ritüellerde de yer almaktadır. Öte yandan, özellikle Bektaşiler arasında kutsal görülen buğday velilerin birçok kerametinde geçmektedir. Bu sebeple tekke sofralarının vazgeçilmez yemeklerinin içinde buğday da vardır. Bu makalede de Türk halk kültüründe önemli bir yer edinen buğday/başak motifi ele alınmıştır. Bu motifin Türk sanatındaki yerinin tam olarak anlaşılabilmesi için önce Anadolu ve ilgili çevre kültürlerde, pagan ve tek tanrılı dinlere mensup toplumlardaki anlam ve kullanımlarından söz edilmiş; sanat eserlerindeki örnekleri sunulmuştur. Ardından çalışmanın asıl ağırlık noktasını oluşturan Anadolu’da Türk-İslam dönemindeki farklı tarih ve çeşitli yüzeylerde karşımıza çıkan buğday/başağın, ikonografik tartışması yapılmış ve değerlendirilmiştir.
Refugee Community Organisations and Dispersal
Authors: Griffiths David , Sigona Nando , Zetter Roger
Published: February 2022

Despite increased political and public interest in asylum issues in the UK, little has been written on the topic. This book, written by leading experts in the field, is the first to examine the role of refugee community organisations (RCOs) at a critical point of policy change.
Caracterización de madurez cognitiva en niños con discapacidad intelectual
Authors: Linares Pinto Ingrid Estefanía , Bran Girón Héctor Alfredo René , López Rojas Mario Josúe , Pinto Cabrera Josué Elizandro , Lucas Vanegas Edwin
Published: February 2022

OBJETIVO: determinar la relación de la madurez cognitiva y la discapacidad intelectual identificando disfunciones cognitivas, motoras y de lenguaje, en niños de etapa escolar. MÉTODO: estudio descriptivo de corte transversal realizado en el municipio de Zacapa, en una población total de 204 niños en etapa escolar que asisten  al programa de adecuación curricular del ministerio de educación.  RESULTADOS: la edad media de la población fue entre los siete a los catorce años, con predominio del género femenino en el 66% (N=181) sobre masculino 34% (N=73).  El grado de maduración cognitiva por el test de ABC fueron la maduración cognitiva más baja con 90% (N=184) seguido de la maduración cognitiva leve del 10% (20) se obtuvieron los datos de la evaluación neuropsicológica del Cociente Intelectual (CI)  encontrando discapacidad intelectual moderada con 88% (N=179) seguido de la discapacidad intelectual leve  con 12% (N=25) CONCLUSIÓN: la correlación de la madurez cognitiva más baja con la discapacidad intelectual moderada  por medio de tabla de contingencia identificando Chi cuadrado con corrección de Yates de 19.8634 y  un valor p < 0,00001 demostrando extrema estadística significativa.
Insuficiencia de vitamina D en adultos mayores del municipio de Zacapa
Authors: Bran Girón Jorge Eduardo , López Barillas Mayda Azucena
Published: February 2022

OBJETIVO: determinar los niveles de insuficiencia de vitamina D en adultos mayores y establecer los grandes síndromes geriátricos asociados. MÉTODO: se realizó un estudio descriptivo transversal en 384 pacientes que asistieron a una clínica de atención geriátrica en el municipio de Zacapa. RESULTADOS: se demostró el rango etario más frecuente fue de 70 a 79 años de edad con un 47% (182), encontrando el género femenino como predominante en un 56% (216), se evidencio que los síndromes geriátricos asociados a la insuficiencia de vitamina D fueron fragilidad, sarcopenia, demencias, dependencia moderada a grave y polifarmacia. CONCLUSIÓN: La insuficiencia moderada según análisis bioquímico fue predominante con un 47% (182).
Neurociencia y bilingüismo en la comunidad maya Kaqchikel (Neurociencia Cognitiva)
Authors: Ruiz Zamora Linda Sofía , Salvador Ajcuc Ingrid Carolina
Published: February 2022

OBJETIVO: demostrar que el bilingüismo en la primera infancia, en la comunidad maya Kaqchikel, favorece los procesos cognitivos que determinarán un buen desarrollo profesional a los individuos. MÉTODO: se realizó un estudio descriptivo-explicativo de carácter mixto aplicado con un universo de sesenta y ocho padres-madres-cuidadores de niños de cero a seis años potenciales alumnos escuela bilingüe de nivel preprimario. En la comunidad del Cantón Las Limas de San Pedro Sacatepéquez, Guatemala. RESULTADOS: el 56% de los padres encuestados utilizan un 50% de comunicación en idioma maya Kaqchikel con sus hijos, sobre un porcentaje del 15% de padres que se comunican con sus hijos totalmente en idioma Kaqchikel. CONCLUSION: es así como se concluye que si niños de la primera infancia conviven en un contexto bilingüe Kaqchikel-español, además de desarrollar componentes neurofisiológicos y procesos neurocognitivos graduales a través de su desarrollo, fortalecerán su propia identidad cultural.
Propuesta de procedimiento de operación en el registro inmobiliario del Registro General de la Propiedad
Authors: Vargas Gálvez Mercedes Analucia
Published: February 2022

OBJETIVO: establecer la problemática relativa al sistema registral de tipo inmobiliario aplicado en Guatemala. MÉTODO: por medio de la metodología de investigación bibliográfica se llegó a establecer la debilidad de la legislación vigente que permite utilizar o presentar documentos de identificación personal falsos ante Notario en la realización de negocios jurídicos contenidos en instrumentos públicos. RESULTADOS: se pudo establecer con base a los hallazgos encontrados que el procedimiento que se realiza en la práctica notarial, identificando problemas concretos en la realización de algunas funciones encomendadas al Notario, los cuales pueden ser subsanados mediante la utilización del Sistema de Identificación Biométrica como complemento a la función notarial y la factibilidad de ser implementado por parte del Registro de la Propiedad. CONCLUSIÓN: el Código de Notariado impone como obligación del Notario, la identificación de los otorgantes cuando no los conociere para tal efecto, debe tener a la vista el documento personal de identificación el cual no obstante contener altas medidas de seguridad es verificable solamente por herramienta tecnológica con la cual los Notarios no cuentan, para determinar la autenticidad de tal documento, lo que refiere un procedimiento que otorgue certeza evitando perjudicar a terceros cuando involuntariamente han autorizado instrumentos públicos.
Penerapan Akad Istisna pada Jual Beli Sampan
Authors: Ayuda Ayuda , Fatimah MZ Nurse , Ferdinan Ferdinan
Published: February 2022

People often have buying and selling carried out to obtain convenience, without knowing whether buying and selling is in accordance with or contrary to Islamic teachings. As happened in the practice of buying and selling istishna. This study aims to determine the application of the Istisna contract in the sale and purchase of canoes in Simpang Gaung Village, Guang District, Indragiri Hilir Regency. The research is field research using qualitative methods. The system of buying and selling canoes in Simpang Gaung Village is partly in accordance with the istisna contract. Meanwhile, seen in the application of the contract, the istisna contract has not been implemented properly, especially in the agreement on the contract and the supply of goods. So, it can be concluded that the sale and purchase of canoes at the Echo intersection are still not in accordance with the istisna contract
Peran Masyarakat Desa Pasimarannu Kabupaten Sinjai untuk Melindungi Pantai dari Ancaman Abrasi dengan Melakukan Penanaman Mangrove
Authors: Risa Nurul Eka Wijayanti , Uspar  , Alamsyah Ridha , Tenriwaruwaty A. , Wahyuni Andi Panca , Liswahyuni A.
Published: February 2022

Abrasi pantai menimbulkan kerusakan secara fisik dan menyebabkan ketidakseimbangan ekosistem karena adanya perubahan bentang alam wilayah pesisir.  Jika hal ini terjadi maka akan menggenangi wilayah daratan secara meluas, bahkan sampai pada pemukiman penduduk dalam satu wilayah yang dekat dengan pantai. Keberadaan mangrove dengan berbagai upaya pencegahan dan penanggulangan abrasi sangat penting untuk diketahui dan dipahami oleh masyarakat. Penelitian ini dilakukan pada bulan Desember tahun 2021, yang berlokasi di Dusun Passahakue, Desa Pasimarannu, Kecamatan Sinjai Timur Kabupaten Sinjai dan di Kampus Universitas Muhammadiyah Sinjai pada Program Studi Ilmu Manajemen Sumber Daya Perairan, jenis penelitian yang akan dilaksanakan adalah penelitian kuantitatif deskriptif, dengan sumber data yang terdiri dari Data Primer maupun Data Sekunder sebagai pendukung, teknik pengumpulan data dilakukan dengan cara accidental sampling, observasi lapangan, membagikan kuesioner dan melakukan wawancara. Jumlah populasi sebanyak 257 orang sedangkan jumlah sampel 72 orang dengan selang kepercayaan 10%.  Berdasarkan hasil analisis yang yang dilakukan, rata-rata yang diperoleh untuk peran masyarakat dalam pengelolaan ekosistem mangrove guna mitigasi abrasi pantai adalah 2.88 termasuk dalam kategori “cukup baik”.
Preferensi Konsumen Berdasarkan Kualitas dan Berat Karkas Ayam Beku di Showroom MBC
Authors: Muthalib Abd. , Sohrah Sitti , Rusman Rusni Fitri Y. , Ahmad Ahfandi
Published: February 2022

Penelitian ini bertujuan untuk mengetahui preferensi konsumen karkas ayam broiler beku di showroom Maiwa Breeding Center (MBC). Penelitian di laksanakan pada bulan maret sampai dengan april 2021. Penelitian menggunakan teknik sampel jenuh, Populasi pada penelitian ini adalah konsumen karkas ayam broiler beku dengan jumlah 24 konsumen. Teknik analisis data menggunakan skala likert dan metode interval. Hasil penelitian mengenai preferensi konsumen karkas ayam broiler beku di showroom maiwa breeding center (MBC). Indeks peresentase dari dua variabel yang diteliti yaitu kualitas karkas 88.33% dan berat karkas 85,33%. Kedua hasil dari variabel tersebut berada pada interval 80 – 100 % yang menunjukkan bahwa responden penelitian menunjukkan respon sangat suka.
Optimalisasi Penerapan Rumah Pangan Lestari dalam Penyediaan Sayuran untuk Memperkuat Ketahanan Pangan di Masa Pandemi COVID-19
Authors: Raisa Daeva Mubarika , Ahmad Ahfandi , Nurdin Fadilah , Qinayah Mirnatul , Alamsyah Ridha , Megawati
Published: February 2022

Program P2KP menjadi pedoman bagi peningkatan diversifikasi konsumsi pangan berbasis kearifan lokal, kerjasama antara masyarakat dan pemerintah. Masalah kerawanan pangan yang serius akan mempengaruhi masyarakat baik di negara maju maupun negara berkembang. Pandemi COVID-19 memberikan dampak besar yang mengganggu akses pada pangan segar, bergizi dengan harga terjangkau. Optimalisasi pemanfaatan pekarangan dilakukan melalui upaya pemberdayaan masyarakat untuk mengoptimalkan pemanfaatan pekarangan sebagai sumber pangan dan gizi keluarga. Penelitian ini dilakukan oleh anggota kelompok wanita tani Anggrek Desa Bulu Kamase Kecamatan Sinjai Selatan Kabupaten Sinjai menggunakan purposive sampling. Populasi dalam penelitian ini anggota KWT Anggrek yang berjumlah 35 orang, sehingga dalam penelitian ini seluruh populasi dijadikan sebagai sampel penelitian. Ruang lingkup penelitian ini adalah pelaksanaan program Rumah Pangan Lestari khususnya pada jenis tanaman sayuran lahan pekarangan anggota KWT Anggrek. Penelitian ini menggunakan metode analisis deskriptif untuk mengetahui tingkat implementasi dan optimalisasi program RPL. Hasil penelitian yaitu Optimalisasi program Rumah Pangan Lestari dipengaruhi oleh intensitas penyuluhan, ketersediaan sarana produksi,serta keterlibatan anggota KWT dalam program. Semakin tinggi intensitas penyuluhan maka dapat mempengaruhi optimalisasi pemanfaatan lahan pekarangan masyarakat untuk memperoleh gambaran tentang manfaat pengelolaan lahan pekarangan dalam ketahanan pangan dan memenuhi kebutuhan gizi masyarakat.
Artificial Intelligence in Corporate Business and Financial Management: A Performance Analysis from Pakistan
Authors: Rasheed Rukhsana , Ishaq Mazhar Nadeem , Rehman Hafeez ur
Published: February 2022

This paper attempts to explore many signs of progress enabled by Artificial Intelligence (AI) in financial and corporate business management. It also amid to identify the benefits and cons of AI applications in social life. A systematic content analysis approach has been used to demonstrate the developmental phases of AI. Four distinct organizational maturity clusters i.e. Pioneers, Investigators, Experimenters, and Passives have been developed on basis of dataset. Data collections was carried through emails, customizable chatbots, live chat softwares and automated helpers of top ten online companies and various banking and financial institutions located in Lahore and Karachi cities for making behavioral analysis. The data results revealed that all aspects of financial managements and corporate business activities have been highly influenced by the application of AI. The study demonstrated that 80% senior business executives were of view that AI boost productivity and creates new business avenues. The results also demonstrated that 88% Pioneer organizations have understand and adopted AI techniques according to organization requirements, 82% Investigator organizations are not using it beyond the pilot stage whereas 24% Experimental organizations were adopting AI without understanding it. These results seem to reflect that AI has profound effects on financial industry to streamline its credit decisions from quantitative trading to financial risk management and fraud detection. This study also discovered that the widespread use of AI have raised a number of ethical, moral and legal challenges that are yet to be addressed. Although AI is gaining popularity day by day and it is believed that AI will improve work performance beyond human standards but it could not replace human resources fully.
An Exploratory Study of Clinical Efficacy of “Shwasahar Dashemani” in Shwas Roga
Authors: Kumar Savan , Dipti
Published: February 2022

Shwasa is considered as the most serious disease in Ayurveda and stated that none other disease kills as instantaneously as Shwasa. A high prevalence of respiratory disorders was observed in Delhi, 30.5 % people are affected the respiratory ailments. Shwasahar Mahakasayais one of the significant Ayurveda group of medicine which helps in improving Respiratory diseases. Study is todrill down the possible effect of Shwasahar Mahakasaya based on distribution of active principles explained in Ayurveda classical text. Percentage criteria is being analysed to get the clarity about the reason behind desired output. Rasa, Guna, Viryaand Vipakathese attributes are analyzed based on their component distribution. Distribution of dominating attributes among 10 Plants indicated in Shwashhar Mahakasaya are Katu Tikta Rasa, Laghu Guna, Ushna Viryaand Katu Vipaka. Results found out of the study is 31.82 % Katu Rasa, 36.36 Tikta Rasa, 43.48% Laghu Guna, 60.00% Ushna Viryaand 60.00% Katu Vipaka. Ushna Virya of the drugs is responsible to alleviate Vataand the remaining other factors Laghu Guna, Katu Tikta Rasaand Katu Vipaka along with Ushna Viryais responsible to alleviate Kapha. Equal potency in Rasapanchaka will produce final result in sequential manner where each aspect lined up with basic effects of Rasa. That is the best possible reason to get the great outcome through Shwashar dashemani.
A Comparative Clinical Study on the Efficacy of KalaBastiand KatiBastiAlong with Nirgundighan Vatiin the Management of Gridhrasi (Sciatica)
Authors: Sharma Akanksha , Makodiya Anjali , Ramani Hetal , Ruparel Sweety
Published: February 2022

The most common disorder which affects the movement of legs, particularly in the most productive period of life i.e 30 to 50 years is the problem of back ache which turns into Sciatica.The signs and symptoms of Sciatica can be correlated to Ghridhrasi. Analgesics or surgery are the only remedies for this disease, which may sometimes produce systemic side effects.Acharya Charakhas described Bastias the line of treatment in Ghridhrasi. So Kala Basti is selected. As Nirgundiacts as Rujaphaand Vatashleshmaprashmani. So NirgundiGhanVatiis selected for Shamandrug. Kati Bastiis selected to break local Samprapti, as it is a type of Bahirparimarjin Chikitsa.Aim: Tocompare the effect ofKala Basti and Kati Bastialong with NirgundighanaVatiinthe management of Gridhrasi. Material and methods:For present study, 30 Patients ofGridhrasiwere randomly divided into 2 groups from the OPD & IPD of Govt. Akhandanand Ayurved Hospital, Ahmedabad. Result: 13.33% of patients had Complete remission, Marked improvement was found in 13.33% and 40% of the patients had Moderate improvement. 33.33% of the patient showed Mild improvement. Conclusion: Kala Basti withNirgundi taila as Anuvasana and Erandmool Kwath in Niruha Basti followed by Shamana therapy with Nirgundi ghan Vatiprovided better results in Ghridrasi especially Vatakaphaj Ghridrasi.
ANALISIS PENGARUH PEMBANGUNAN BENDUNGAN TAPIN TERHADAP DEBIT BANJIR DI HILIR SUNGAI TAPIN KABUPATEN TAPIN
Authors: Azmie Muhammad , Helda Noordiah
Published: February 2022

Provinsi Kalimantan Selatan memiliki kerawanan banjir yang cukup tinggi salah satunya pada Kabupaten Tapin. Penyebab banjir yang utama adalah curah hujan yang tinggi dan banjir kiriman. Salah satu cara untuk mencegah terjadinya banjir adalah dengan membuat rekayasa bangunan air seperti bendungan yang berfungsi untuk menampung air sungai sehingga pada musim hujan dapat menampung kelebihan air agar tidak menyebabkan banjir. Bendungan Tapin dibangun untuk keperluan pencegahan banjir, irigasi, memenuhi kebutuhan air baku, perikanan, pariwisata dan sebagai sumber pembangkit listrik.

Metode penelitian yang digunakan mulai dari tahap persiapan dan mempelajari perhitungan analisis frekuensi, hidrograf satuan sintetik Nakayasu dan penelusuran banjir untuk analisis hidrologi dan software HEC-RAS untuk analisis hidrolika yang akan digunakan. Data yang diperlukan adalah data primer berupa data penampang sungai dan data sekunder berupa data curah hujan dan data teknis bendungan.

Hasil analisis menunjukkan debit banjir yang terjadi sebelum adanya bendungan Tapin untuk kala ulang 25, 50 dan 100 tahun adalah sebesar 234,241 m3/det,  249,214 m3/det dan 262,195 m3/det. Pada penelusuran banjir dilakukan dengan 2 kondisi yaitu tinggi muka air normal dan tinggi muka air banjir dengan kala ulang yang sama secara berurutan debit outflow yang dihasilkan pada kondisi tinggi muka air normal adalah sebesar 106,178 m3/det, 116,287 m3/det dan 125,051 m3/det dan debit banjir yang dapat tereduksi sebesar 54,671%, 53,338% dan 52,306%. Sedangkan pada kondisi tinggi muka air banjir debit outflow yang dihasilkan adalah sebesar 180,634 m3/det, 190,149 m3/det dan 198,399 m3/det dan debit banjir yang dapat tereduksi sebesar 22,886%, 23,7% dan 24,331%.
ANALISIS POTENSI PEMANENAN AIR HUJAN DALAM PEMENUHAN KEBUTUHAN AIR BERSIH DI KECAMATAN BANJARBARU UTARA
Authors: Ramadhayanti Nia Ridha , Helda Noordiah
Published: February 2022

Banjarbaru Utara merupakan salah satu kecamatan di kota Banjarbaru, Provinsi Kalimantan Selatan yang pertumbuhan penduduknya dalam lima tahun terakhir terus mengalami peningkatan. Bertambah pesatnya pertumbuhan penduduk di wilayah Banjarbaru Utara membuat perubahan fungsi tata guna lahan menjadi tidak terkontrol, di mana seharusnya fungsi kawasan yang dapat menjadi lahan resapan air dalam jumlah besar akhirnya semakin sedikit, sehingga jumlah air yang masuk ke dalam tanah untuk mengganti air tanah yang keluar menjadi berkurang. Sedangkan, di lain sisi permintaan air bersih akan semakin bertambah. Penelitian ini bertujuan untuk mengetahui potensi pemanenan air hujan, untuk pemenuhan kebutuhan air bersih rumah tangga dan penggunaan air di Kecamatan Banjarbaru Utara. Metode yang digunakan untuk penelitian ini adalah metode Survei. Data yang digunakan dalam Tugas Akhir ini adalah data primer dan data sekunder. Pada penelitian ini diperlukan beberapa analisis, seperti analisis hidrologi yang mencakup analisis curah hujan dengan metode Curah Hujan Andalan, untuk menghitung potensi pemanenan air hujan adalah dengan melakukan perkalian antara luas penampang atap bangunan, koefisien runoff, dan curah hujan di Kecamatan Banjarbaru Utara, dan dibantu dengan program QGIS 10.13 untuk memperoleh data luasan atap pada lokasi penelitian. Dari hasil penelitian didapatkan luas total luasan atap bangunan/rumah di Kecamatan Banjarbaru Utara sebesar 858.850 m2 dari 8.805 rumah dengan curah hujan harian andalan didapatkan 6,4 mm/hari serta koefisien runoff sebesar 0,8. Dari hasil perhitungan didapatkan hasil potensi pemanenan air hujan di Kecamatan Banjarbaru Utara sebesar 1.318.781.352 liter/tahun atau sama dengan 1.318.781,35 m3/Tahun. Kemudian dari hasil survei wawancara responden di Kecamatan Banjarbaru Utara didapatkan hasil penggunaan air bersih rata – rata sebesar 200 liter/orang/hari. Hasil pengolahan data berdasarkan jumlah penduduk dan penggunaan air bersih rata – rata, maka didapatkan hasil penggunaan air bersih di Kecamatan Banjarbaru Utara sebesar 4.155.073.297,9 liter/tahun atau sama dengan 4.155.073,29 m3/tahun. Dari hasil pengolahan data tersebut dapat disimpulkan bahwa potensi pemanenan air hujan tidak bisa memenuhi kebutuhan air bersih secara keseluruhan. Ketersediaan air berdasarkan potensi pemanenan air hujan ini secara tidak langsung juga dipengaruhi oleh pola perilaku masyarakat dalam memanfaatkan air dalam kebutuhan sehari – hari.
PERANCANGAN ULANG KURVA LENGKUNG KAPASITAS WADUK TAPIN DI KABUPATEN TAPIN PROVINSI KALIMANTAN SELATAN
Authors: Najmi Alvin , Helda Noordiah
Published: February 2022

Waduk Tapin merupakan tampungan air yang ada karena proses pembendungan aliran Sungai Tapin. Waduk Tapin direncanakan memiliki kapasitas tampungan yang besar. Besarnya kapasitas tampungan waduk akan mempengaruhi seberapa besar air yang bisa dimanfaatkan nantinya untuk kebutuhan. Pentingnya mengetahui kapasitas tampungan waduk adalah untuk membuat waduk bekerja dengan optimal agar tidak terjadi masalah bila nantinya digunakan. Metode yang digunakan pada penelitian ini adalah dengan menganalisa ketersediaan air dengan metode F.J Mock, menganalisa kehilangan air akibat outlet dan evaporasi, analisis bathimetri untuk mendapatkan kurva lengkung kapasitas waduk, dan analisis neraca air untuk mengetahui kesetimbangan airnya. Hasil penelitian untuk lengkung kapasitas waduk, didapatkan kapasitas optimal waduk ditunjukkan oleh titik perpotongan antara volume genangan dan luas genangan waduk pada elevasi +146,2 m², berdasarkan perhitungan didapat volume waduk ±53.842.244,566 m³ dan luas genangan ±3.134.081,768 m² dan untuk neraca air terlihat ketersediaan air tertinggi terdapat pada bulan Mei yang bernilai 15,607 m³/detik dan yang terendah terdapat pada bulan November dengan nilai 5,637 m³/detik. Kehilangan air tertinggi terdapat pada bulan November dengan nilai 4,450 m³/detik, yang mana apabila dilihat ketersediaan air di waduk Tapin maka waduk Tapin mampu memenuhi kebutuhan air yang diperlukan.
ANALISA PERBANDINGAN KUAT TEKAN BETON FC-20,75 DENGAN DIRAWAT (CURING) DAN TIDAK DIRAWAT
Authors: Basri Doni Rinaldi , Tisnawan Rahmat , Pribadi Wahyu B
Published: February 2022

Untuk memahami dan mempelajari seluruh perilaku elemen gabungan pembentuk beton diperlukan pengetahuan tentang karakteristik masing-masing komponen pembentuk beton yaitu semen, agregat halus, agregat kasar dan air. Misalkan Semen A yang memiliki ketahanan yang tinggi terhadap sulfat, sehingga menghasilkan beton yang kuat dan bertekstur lebih halus. Sedangkan untuk Semen B adalah semen yang termasuk dalam kategori Blended Cement atau semen campur. Penelitian ini dilakukan untuk melihat perbandingan kuat tekan beton fc-20,75 dengan 2 (dua) merek semen yang berbeda, dengan metode perawatan (curing) dan tidak dirawat. Tujuan penelitian ini adalah untuk mengetahui nilai rata-rata dari hasil kuat tekan beton tersebut sehingga dapat dibandingkan hasil semen manakah yang lebih kuat. Berdasarkan hasil uji tekan didapatkan mutu beton tertinggi untuk Semen A sebesar 22,89 Mpa dan untuk Semen B sebesar 21,76 MPa. Sedangkan untuk beton yang tidak dilakukan perawatan, didapatkan mutu beton tertinggi 19,15 MPa untuk Semen A dan 17,41 MPa untuk Semen B. Artinya pemberian perawatan sangat berpengaruh tinggi dalam meningkatkan mutu kekuatan beton.
TINJAUAN DAYA DUKUNG PONDASI SUMURAN PADA GEDUNG-X DI KOTA BUKITTINGGI
Authors: Trinanda Asri Yuda
Published: February 2022

Suatu konstruksi terdiri dari struktur atas dan struktur bawah. Masing-masing elemen struktur berfungsi dalam menahan seluruh beban yang bekerja pada bangunan tersebut. Struktur bawah yang terdiri dari pondasi, menjadi tumpuan seluruh beban-beban yang bekerja di atas bangunan tersebut. Jenis pondasi yang digunakan tergantung pada pemilihan tipe struktur, beban yang bekerja dan jenis tanahnya. Salah satu jenis pondasi pada konstruksi adalah pondasi sumuran. Penelitian ini akan menganalisis tentang kapasitas dari pondasi sumuran pada proyek pembangunan gedung X di Kota Bukittinggi. Dalam perhitungan kapasitas daya dukung pondasi menggunakan dua metode, yaitu metode Terzaghi dan metode Meyerhof. Perhitungan dilakukan terhadap satu tipe dimensi pondasi diameter 1,2 m dengan kedalaman tiga meter. Dari hasil analisis yang dilakukan terhadap daya dukung pondasi, diperoleh daya dukung pondasi dengan metode Terzaghi sebesar 2524,3 kN. Sedangkan daya dukung yang diperoleh dengan metode Meyerhof adalah 1759,57. Adanya perbedaan nilai daya dukung ijin pada metode Terzaghi dan metode Meyerhof karena penambahan koefisien-koefisien pada metode tersebut. Pada metode Terzaghi memperhitungkan faktor bentuk pondasi. Sedangkan metode Meyerhof dipengaruhi oleh faktor kedalaman pondasi, faktor bentuk pondasi, dan faktor kemiringan beban.
ANALISA DAYA DUKUNG PONDASI BORED PILE PADA GEDUNG KANTOR SATPOL PP KOTA BUKITTINGGI
Authors: Arsyad Nadra , Yanti Rita Nasmira , Akbar Hidayatul
Published: February 2022

Pondasi tiang atau disebut juga pondasi dalam berfungsi untuk memikul dan menahan beban yang bekerja diatasnya yaitu beban konstruksi atas kelapisan tanah yang keras. Dalam perencanaan pondasi tiang harus dilakukan dengan teliti dan keamanan yang diterutamakan, termasuk mendukung beban maksimum yang mungkin terjadi. Tujuan dari studi ini untuk menghitung daya dukung pondasi Bored Pile dari data sondir memakai metode mayerhoff, menentukan ukuran dimensi pondasi bored pile, menentukan jumlah pondasi group yang memikul, dan metode pangumpulan data dengan metode observasi, pengambilan data dari kontraktor dan pengawas pelaksana dan melakukan studi keperpustakaan. Hasil dari perhitungan daya dukung pondasi Bored Pile sudah termasuk kategori aman dengan total sebesar 107,374 ton dan total daya dukung ijin sebesar 56,78 ton pada kedalaman 6,8 meter di satu titik, hasil analisis dimensi Bored Pile yang direncanakan berdiameter 40cm dengan  titik sebanyak 41 perletakan dengan pondasi  6 tipe yaitu P1 terdapat 19 tiang, P2 terdapat 10 tiang, P3 terdapat 8 tiang, P4 terdapat 1 tiang, P5 terdapat 2 tiang, dan P6 terdapat 1 tiang, dan berdasarkan hasil analisis perhitungan jumlah jenis pondasi pile group sebanyak 6 jenis dengan jumlah tiang yang berbeda yaitu P1 menggunakan 1 tiang, P2 menggunakan 2 tiang, P3 menggunakan 3 tiang, P4 menggunakan 4 tiang, P5 menggunakan 5 tiang, dan P6 menggunakan 1 tiang
Analisis Manajemen Risiko Terhadap Aspek Keselamatan dan Kesehatan Kerja Pada Pembangunan Daerah Irigasi (Lanjutan) di Tarusan Pada Titik P-52 Dan P-92
Authors: Boy Wendi , Tulhijah M Rodiah , Fitrah Ridho Aidil
Published: February 2022

Dalam pelaksanaan proyek konstruksi selalau ada potensi bahaya atau Risiko yang dapat menyebabkan kerugian. Setiap tempat kerja selalu memiliki Risiko kecelakan kerja yang dapat menggangu aktivitas pekerjaan dalam sebuah proyek. Faktor-faktor yang menyebabkan terjadinya kecelakaan kerja yang dapat mengganggu aktivitas pekerjaan dalam sebuah proyek. Oleh karena itu diperlukan suatu manajemen agar dapat mengatur jalannya proyek dengan baik, termasuk pula manajemen Risiko K3 (Kesehatan dan Keselamat Kerja). Tujuan dan sasaran manajemen risiko K3 (Kesehatan dan Keselamatan Kerja) adalah terciptanya system K3 (Kesehatan dan Keselamtan kerja) di tempat kerja melibatkan segala pihak sehingga dapat mencegah dan mengurangi kecelakaan dan penyakit akibat kerja dan terciptanya tempat kerja yang aman, efisien, dan produktif.

Penelitian ini akan dilakukan identifikasi risiko K3, penilaian risiko K3, serta strategi pengendalian terhadap risiko K3 pada pekerjaan Pembangunan daerah irigasi (lanjutan).

Dari hasil penelitian teridentifikasi 45 potensi risiko kecelakaan kerja yang dapat terjadi. Berdasarkan penilaian terhadapa Risiko K3 diketahui level masing-masing risiko yaitu terdapat 45 risiko tergolong Medium Risk dan dari 47 mengidentifikasi risiko terdapat 2 tergolong Low Risk. Pada penelitian ini perlu dilakukan penanganan yaitu dengan memberikan pengendalian risiko berupa penerapan K3 dilapangan meliputi penggunaan APD, rambu-rambu peringatan dan standarisasi pengaman pada saat bekerja di lapangan.
Lead in drinking water
Authors: Zhang Kai , Chen Dale , Heacock Helen , Kosatsk Tom , BCIT School of Health Sciences Environmental
Published: February 2022

Background: Lead is a systemic toxin that affects multiple organs and impairs physical and mental development. Although lead is ubiquitous in the environment, majority of exposures to lead is through drinking water. Lead-based plumbing components are the primary reason. Flushing is a lead reduction technique commonly used to reduce lead in drinking water, but the efficacy of the technique has been questioned. The purpose of this research project was to determine if there were significant levels of lead found in the drinking water of 12 buildings (sites) owned and operated by a Health Authority before and after 30-second flush and to determine if flushing is an effective measure to reduce lead concentrations.Materials and Methods: Lead in drinking water data was provided by Dr. Tom Kosatsky in an Excel spreadsheet. The data contained 184 pre-flush (≥ 8-hour stagnation period) samples paired to 184 post-flush (30-second duration) samples collected at locations within the 12 different sites. The sites were labelled A to L due to confidentiality. This data was then exported to NCSS, and statistical analysis in the forms of a two tailed t-test, one tailed one sample t-test, and repeated measures ANOVA was performed to determine if a statistically significant relationship between flushing and reduced lead concentrations exists.Results: Out of 368 samples, 28% of stagnation samples contained lead concentrations greater than the MAC (n = 103) whereas, 9% of post 30-second flush samples contained lead concentration greater than the MAC (n = 33). Lead concentrations in the drinking water samples after flushing were significantly reduced below the MAC (p = 0.00000). However, lead concentrations from samples collected at sites A, C, and G were equal to or greater than the MAC. Statistical analysis failed to reject the null hypothesis that post-flush lead concentrations for samples collected at sites A, C, and G is greater to or equal to the MAC (A: p = 0.22708, C: p = 0.06866, and G: p = 0.70589).Conclusion: Flushing is an effective measure in reducing lead concentrations at the tap to safe levels. However, the effectiveness of flushing and flushing duration is dependent on numerous factors such as the stagnation period, amount of lead-based plumbing supplying the drinking water and building size. Longer stagnation periods, increased lead-based plumbing, and large buildings all require longer flushing times to reduce lead concentrations to below 0.005 mg/L. The results of this can study can aid governments in developing polices that will eliminate existing lead infrastructure in British Columbia and Canada. Flushing is not a long-term solution in reducing lead concentrations at the tap to below 0.005 mg/L.