Journal of the Institute of Science and Technology

Bu çalışmada, Barbarea (Brassicaceae) cinsine ait Barbarea platycarpa ve B. integrifolia türlerinin anatomik ve morfolojik özellikleri incelenmiştir. Morfolojik çalışmalarında, her iki türün taksonomik değere sahip olan gövde, yaprak, çiçek ve meyve karakteristikleri ölçülmüş ve elde edilen verilere göre kapsamlı betimleri hazırlanmıştır. Anatomik çalışmalarda ise kök, gövde ve yapraklardan mikro…

Günümüzde 5G olarak adlandırılan beşinci nesil kablosuz teknolojinin ortaya çıkışı ile birlikte, iletişimde yeni bir dönem başlamış oldu. Bu dönemde çeşitli kullanıcıların farklı ve kişisel taleplerini karşılamak için ağ hizmetlerinin özelleştirilmesi büyük bir önem kazanmıştır. Ağ dilimleme, bu özelleştirmeyi sağlamak için temel bir teknoloji olarak karşımıza çıkmaktadır. Özelleştirilmiş hizmetl…

Since the drug-resistant strains, prolonging treatment duration, increasing mortality rates, together with raising healthcare costs caused by antibiotic resistance has become a critical global problem, the scientists have been seeking alternative treatments options such as probiotic supplementation. The present study aimed to investigate the antimicrobial effects of standard probiotic microorgani…

The present study was conducted between May 2022 and September 2024 in Elazığ Province; located in eastern Anatolian Region of Türkiye, to identify the species of family Dytiscidae (Predaceous diving beetles). A total of 1,163 dytiscid specimens were collected from 52 different localities and identified. In total, 38 species belonging to 16 genera within the family Dytiscidae were recorded. All i…

Despite being a recently recognized environmental concern, the terrestrial dispersion of airborne microplastics (MPs) pollution remains uncertain. This study investigates airborne microplastic contamination in industrial zones and a landfill area of Ankara (Türkiye) using the epiphytic lichen Xanthoria parietina (L.) Th. Fr. as a passive bioindicator. Lichen samples were collected from three orga…

Natural products provide great potential for contemporary medication development due to their diverse biological activity, large range of sources, and structural diversity. In this investigation, the enzymes collagenase, elastasei and hyaluronidase were inhibited by Clusiacyclol A, Cycloolivil, and Cyclopenol molecules with excellent to good IC50 values of 11.35 ± 1.24, 75.36 ± 11.73, and 25.17 ±…

Water has played a vital role in the establishment and development of civilizations, particularly in arid and semi-arid regions. Among ancient water management systems, the qanat (kehriz) represents one of the earliest and most effective engineering solutions for sustainable irrigation and drinking water supply. This study examines the qanat systems in Van, Türkiye, through a comprehensive litera…

Herbivorous insect infestations are a serious problem that threatens the plants. To cope with this issue, plants utilize various defense mechanisms. Malacosoma neustria L. (the lackey moth) (Lepidoptera: Lasiocampidae), which causes significant damage by feeding on many shrub-like and woody plants during its larval stage, is a worldwide pest. Sea buckthorn, Elaeagnus rhamnoides L. (Rosales: Elaea…

Bu çalışma, Vancouver şehri için hava durumu tahmini amacıyla dört farklı yöntem; LSTM (Uzun Kısa Süreli Bellek Ağları), ARIMA (Otoregresif Entegre Hareketli Ortalama), CNN (Evrişimsel Sinir Ağları) ve En Küçük Kareler Tekniği kullanarak tahmin performanslarını karşılaştırmaktadır. Her bir model, zaman serisi verilerini farklı şekillerde işleyerek tahmin sonuçları üretmektedir. Model performansla…

Projections suggest that by 2050 the world’s population will be close to 9.7 billion. Such rapid growth will put extra pressure on food supplies, making secure and sustainable nutrition strategies more important than ever. Among the possible solutions, aquaculture has a special place. It provides a steady source of animal protein and, compared with many other food production systems, leaves a sma…

This study was conducted to determine the effects of different intra-row spacings (10 cm, 20 cm, 30 cm and 40 cm) and seed harvest periods (1st harvest period; 100% ripening, 2nd harvest period; 50% ripening) on seed yield and quality in Mountain spinach. The research was established in 2023 according to factorial arrangement in randomized blocks in the dry experimental field of Iğdır University …

In this study, the axial buckling behavior of laminated hybrid composite beams was comprehensively investigated using theoretical and numerical approaches. The main objective of the study is to systematically evaluate the buckling performance of hybrid composite beams with different stacking sequences and geometric perforations. For this purpose, a computational program based on Euler and Timoshe…

Evaluation of the starting material of Azerbaijani corn germplasm constitutes our aim. The material of the study consists of 110 unrelated homozygous maize genotypes collected from different agro-climatic zones of Azerbaijan. The study was carried out in Zagatala of Azerbaijan Republic in 2021 and in Baku in 2022. Augmented design models, cluster analysis and principal component analysis (PCA) we…

Polilaktik asit (PLA), çevre dostu yapısı ve kolay basılabilirliği sayesinde eritilmiş biriktirme modelleme (FDM) tekniğinde yaygın olarak kullanılan popüler bir biyopolimerdir; ancak fonksiyonel uygulamalar için mekanik özelliklerinin genellikle iyileştirilmesi gerekmektedir. Bu çalışma, 3B (üç boyutlu) baskılı PLA numunelerin çekme dayanımı üzerindeki ısıl işlem parametrelerinin—özellikle sıcak…

In this study, the total phenolic and flavonoid contents, total antioxidant capacity, free radical scavenging activities, ascorbic acid levels of the endemic Astragalus halicacabus Lam. species growing in Turkey were thoroughly evaluated. The total antioxidant capacity of the leaves was determined as 10.32±0.30 mM ascorbic acid/g, while total phenolic and total flavonoid contents were 4.29±0.12 m…

Cardiovascular diseases (CVD) are a leading global cause of death and morbidity. This study evaluates data balancing techniques (SMOTE, ENN, SMOTE-ENN, SMOTE-Tomek) and machine learning (ML) algorithms for predicting CVD risk using big data. The 2021 CDC BRFSS dataset, with 308,854 records, was preprocessed by removing missing and irrelevant data. The dataset was split into 80% training and 20% t…

Salinity is one of the most destructive abiotic stresses limiting rice productivity worldwide. The present study investigates the role of the native soil microbiome in enhancing salinity tolerance of the salt-sensitive Oryza sativa ssp. japonica cv. Nipponbare. Plants were grown under control (0 mM NaCl) and salinity (75 mM NaCl) conditions with microbiome presence (Mb⁺) or absence (Mb⁻). Growth …

Bitkisel tasarımlarda estetik değerin artırılmasında renk unsuru önemli bir rol oynamakta ve bu etki özellikle çiçeklenme dönemlerinde belirginleşmektedir. Süs bitkilerinin çiçeklenme zamanı ve süresinin bilinmesi, başarılı ve sürdürülebilir peyzaj tasarımlarının oluşturulmasında temel kriterlerden biridir. Bu çalışmanın amacı, Iğdır koşullarında ilkbaharın gelişini müjdeleyen bitki taksonlarını …

Çalışmada, elektronik atıkların (e-atık) plastik kısımları kullanılarak üretilen ve aktif ve/veya pasif taban izolatörü olarak kullanılması düşünülen e-atık katkılı polimer kompozit numunelerinin tahribatsız yöntem olan ultrasonik darbe hızı (UPV) yöntemi ile kalitesinin takip edilmesi amaçlanmıştır. Bu amaçla, doymamış poliester-stiren kopolimeri içerisine ağırlıkça %10, %20, %30, %40 ve %50 ora…

In this study, the performances of various regression models are compared for predicting the wind turbine generation power using SCADA data from a wind-turbine in Turkey. The main objective of the study is to evaluate different machine learning algorithms to accurately predict the active power generation of the turbine under the influence of different parameters such as wind speed, wind direction…