Results 41 to 50 of about 15,366 (202)

BİLİMSEL SÜREÇ BECERİLERİNİN 10. ve 11. SINIF KİMYA DERS KİTAPLARI VE KİMYA DERS MÜFREDATINDA TEMSİL EDİLME DURUMLARI

open access: yesSakarya Üniversitesi Eğitim Fakültesi Dergisi, 2013
Bu çalışma, bilimsel süreç becerilerinin, 10. ve 11. sınıf kimya ders kitaplarında ve kimyamüfredatında ne kadar yer aldığını tespit etmek amacıyla yapılmıştır. Araştırmada; 10. ve11.
Habibe Bahadır   +2 more
doaj  

Effect of Resin on Friction Performance and Particle Emissions in Vehicle Polymer Brake Pads Composites

open access: yesPolymer Composites, Volume 46, Issue 16, Page 14862-14871, 10 November 2025.
Effect of resin on friction performance and particle emissions in vehicle polymer brake pads composites. ABSTRACT Brake emissions that occur during braking in disc brakes cause significant environmental pollution, and the measurement of particulate matter (PM) emissions resulting from braking has gained importance in recent years.
Hicri Yavuz
wiley   +1 more source

Investigation of Mechanical and Impact Properties of Hemp Fiber Reinforced Epoxy‐Based Nanocomposites

open access: yesPolymer Composites, Volume 46, Issue 16, Page 15369-15380, 10 November 2025.
Schematic diagram for the preparation of hemp fiber‐reinforced epoxy‐based nanocomposites. ABSTRACT In this study, the effect of graphene nanoparticles (GnPs) on the mechanical properties of hemp fiber reinforced epoxy composites was investigated. The composites were prepared using the vacuum assisted resin transfer molding (VARTM) method and prepared ...
Ahmet Erkliğ   +3 more
wiley   +1 more source

Risk of Uterine Rupture with Vaginal Birth after Cesarean in Twin Gestations

open access: yesObstetrics and Gynecology International, 2021
Background. Women with a previous cesarean delivery may attempt a subsequent vaginal birth or repeat cesarean. Vaginal birth after cesarean carries a greater risk of uterine rupture, defined as the disruption of all uterine layers, resulting in maternal ...
Kimya Baradaran
doaj   +1 more source

God and World in the Ontology of al-Ghazali [PDF]

open access: yes, 2018
The purpose of this article is to reveal al-Ghazali's understanding of God and world on the ontological basis. He bases the purpose of existence of the world with to know God. In such a study, it is difficult to distinguish ontology from epistemology. Al-
Akgul, Abdullah
core  

Epoxidized soybean oil: A sustainable solution to polyvinyl chloride recycling challenges

open access: yesJournal of Vinyl and Additive Technology, Volume 31, Issue 6, Page 1328-1342, November 2025.
Recycling process and characterization of polyvinyl chloride. Abstract Recycling process of polyvinyl chloride (PVC), a widely used plastic, is important in order to reduce its harmful environmental impacts and contribute to the circular economy. Thermal degradation of PVC during mechanical recycling significantly reduces its final properties and ...
Gülşah Demir, Bedriye Ucpinar
wiley   +1 more source

Piridinyum azotuna bağlı farklı fonksiyonel grup içeren iki adet katyonik yüzey aktif maddenin sentezi ve 1.0 M HCl ortamındaki korozyon inhibisyon özellikleri

open access: yesJournal of Ata-Chem, 2023
Bu çalışmada, piridinyum azotuna bağlı farklı fonksiyonel gruplara (biri amid diğeri ester grubu) sahip iki katyonik yüzey aktif madde sentezlenmiş ve yapıları spektroskopik yöntemle (FT-IR) doğrulanmıştır.
Gülşen Akgül, Serkan Öztürk
doaj  

Synthesis and Characterization of New Ferrocenyl and 3-methoxytolyl Dithiophosphonates

open access: yesHittite Journal of Science and Engineering, 2022
In this study, perthiophosphonic acid anhydrides which are previously known (2,4-bis(3-methoxytolyl)-1,3-dithia-2,4-diphosphetane-2,4-disulfide ([(3-methoxytolyl)P(S)S)2], SAV-B1 reagent and 2,4-bis(ferrocenyl)-1,3,2,4-dithiadiphosphetane-2,4-disulfide [(
Ayşe Yıldırım   +2 more
doaj   +1 more source

İmalat sanayiinde yenilik araştırması 2006/07 raporu [PDF]

open access: yes, 2007
İmalat Sanayiinde Yenilik Araştırması; Karlsruhe, Almanya'da bulunan Fraunhofer Institute for Systems and Innovation Research (Fraunhofer ISI) tarafından 1993 yılında Alman imalat sanayii bünyesinde başlatılmıştır.
Ulusoy, Gunduz   +3 more
core  

Comparative Structural Analysis of Escherichia Coli Cyay at Room and Cryogenic Temperatures Using Macromolecular and Serial Crystallography

open access: yesChemBioChem, Volume 26, Issue 20, October 31, 2025.
Room‐temperature (RT) crystallography of E. coli CyaY, the bacterial frataxin homolog, reveals subtle but functionally relevant differences from cryogenic structures. The conserved fold shows distinct side‐chain conformations and water networks, highlighting dynamics often hidden at low temperatures.
Alaleh Shafiei   +4 more
wiley   +1 more source

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