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Research Article
Title: A conformal 4-element phased array antenna using a T-junction power divider for beam steering in X-band unmanned aerial vehicle applications
Authors: Okan EVREN, Sena Esen BAYER KESKİN, Nurhan TÜRKER TOKAN
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: October, Year: 2026, Volume: 44, Issue: 5, (OCT 2026), pp:3107-3119
DOI: 10.14744/sigma.2026.2146
Viewed: (30) times
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Research Article
Title: Modification of high-calcium fly ash to meet ASTM requirements when used as a binder
Authors: Mohammed Ali ABDULREHMAN, Esraa A. ABBOD, Ali Abed SALMAN, Akram Q. MOFTEN, Ahmed Hafedh MOHAMMED
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: October, Year: 2026, Volume: 44, Issue: 5, (OCT 2026), pp:3096-3106
DOI: 10.14744/sigma.2026.2145
Viewed: (28) times
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Research Article
Title: Load demand estimation and prediction models for effective planning and sustainability of microgrid project in rural community
Authors: Harrison Oyibo IDAKWO, Lanre OLATOMIWA, James Garba AMBAFI, Abubakar Sadiq AHMAD
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: October, Year: 2026, Volume: 44, Issue: 5, (OCT 2026), pp:3077-3095
DOI: 10.14744/sigma.2025.00100
Viewed: (24) times
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Research Article
Title: Evaluation of management strategies and drug therapy problems in patients with angina pectoris: A cross-sectional observational study
Authors: Faheem Ahmad JAN, Aftab ULLAH, Asif JAN, Abdur RAHIM, Imad ULLAH, Rani AKBAR
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: October, Year: 2026, Volume: 44, Issue: 5, (OCT 2026), pp:3067-3076
DOI: 10.14744/sigma.2026.2144
Viewed: (23) times
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Research Article
Title: Assessing the water quality of a rural South-Eastern Nigeria river using water quality assessment indices
Authors: Emeka Donald ANYANWU, Sharmine Akter SIMU, Onyinyechi Gladys ADETUNJI, Amarachi Grace STEPHEN
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: October, Year: 2026, Volume: 44, Issue: 5, (OCT 2026), pp:3055-3066
DOI: 10.14744/sigma.2026.2143
Viewed: (28) times
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Review Article
Title: Nanofluids and their role in enhancing automotive performance: A comprehensive review
Authors: Sanjeev Kumar GUPTA, Soni KUMARİ
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: August, Year: 2026, Volume: 44, Issue: 4, (AUG 2026), pp:3027-3054
DOI: 10.14744/sigma.2026.2142
Viewed: (351) times
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Review Article
Title: Innovative thermal and non-thermal treatments for microorganism inactivation in plant milk
Authors: Ulaş BAYSAN, Işıl İLTER BAYSAN
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: August, Year: 2026, Volume: 44, Issue: 4, (AUG 2026), pp:3012-3026
DOI: 10.14744/sigma.2026.2141
Viewed: (266) times
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Review Article
Title: A review: Machine learning approach to understanding the impact of mobile phone addiction on academic performance, health, and family life
Authors: R. Ruth BELINA, T. Lucia Agnes BEENA
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: August, Year: 2026, Volume: 44, Issue: 4, (AUG 2026), pp:3002-3011
DOI: 10.14744/sigma.2025.1908
Viewed: (261) times
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Research Article
Title: A comprehensive framework for selecting building energy modelling tools to support sustainable design
Authors: Ahmad Walid Ayoobi, Mehmet Inceoğlu
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: August, Year: 2026, Volume: 44, Issue: 4, (AUG 2026), pp:2982-3001
DOI: 10.14744/sigma.2026.2140
Viewed: (265) times
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Research Article
Title: Some components and bioactive properties of gel and green leaf parts of A. vera
Authors: Heleen TAHSEEN YASEEN, Sevda KIRBAĞ, Fikret KARATAŞ
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: August, Year: 2026, Volume: 44, Issue: 4, (AUG 2026), pp:2974-2981
DOI: 10.14744/sigma.2026.2139
Viewed: (250) times
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Research Article
Title: Influence of artificial aging on microstructure and mechanical properties of Aluminum 2219-T87 TIG welded joints
Authors: Atif SHAZAD, Maaz AKHTAR, Muhammad UZAIR
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: August, Year: 2026, Volume: 44, Issue: 4, (AUG 2026), pp:2963-2973
DOI: 10.14744/sigma.2026.2138
Viewed: (48) times
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Research Article
Title: Optimization of geogrid reinforcement for improving CBR of subgrade soils
Authors: M. Bharath CHANDRA, Kadali SRINIVAS, V. Ramya KRISHNA
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: August, Year: 2026, Volume: 44, Issue: 4, (AUG 2026), pp:2952-2962
DOI: 10.14744/sigma.2026.2137
Viewed: (40) times
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Research Article
Title: Enhancing geopolymer mortars: The impact of Algerian metakaolin substitution on mechanical performance and sustainability
Authors: Kamel HEBBACHE, Abdellah DOUADİ, Oualid Mahieddine HAMDİ, Mourad BOUTLİKHT, Abderraouf MESSAİ, Nour El Houda KHİTAS, Cherif BELEBCHOUCHE
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: August, Year: 2026, Volume: 44, Issue: 4, (AUG 2026), pp:2937-2951
DOI: 10.14744/sigma.2026.2136
Viewed: (77) times
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Research Article
Title: Parameter estimation for Multivariate Gamma distribution with Particle Swarm Optimization based on Taguchi method
Authors: Aynur YONAR, Nimet YAPICI PEHLİVAN
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: August, Year: 2026, Volume: 44, Issue: 4, (AUG 2026), pp:2924-2936
DOI: 10.14744/sigma.2026.2135
Viewed: (75) times
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Research Article
Title: Formulation of eco-friendly dishwasher liquid: A sustainable solution
Authors: Hemant M. JARİWALA, Ravi VAGHELA
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: August, Year: 2026, Volume: 44, Issue: 4, (AUG 2026), pp:2917-2923
DOI: 10.14744/sigma.2025.00143
Viewed: (73) times
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