Yazar "Ulusoy, Hatice" seçeneğine göre listele
Listeleniyor 1 - 12 / 12
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe Antioxidant stone water (human/friendly environment) thermal (thermogravimetric-TGA) combustion properties in biohazard (insect/fungus) wood(Assoc Brasil Polimeros, 2020) Tan, Hüseyin; Ulusoy, Hatice; Peker, HüseyinIn this study, four different wood species walnut (Juglans regia L.), chestnut (Castanea sativa Mill.), Poplar (Populus nigra), scotch pine (Pinus sylvestris L.) were chosen and test samples were prepared according to TS 2470 principles. Especially the pine wood by taking the structure (with fungus, fungus/insect, insect), flawless wood structure is compared with the flawed wood structure. The impregnation process was carried out according to ASTM D 1413 -76 principles. Effects of the chemical characteristics of the determined Stone Water (Firetex) on the thermal decomposition properties of wood (burning degrees, degradation temperature points and residue amount) were determined with TGA (thermogravimetric analysis). According to the results of the experiment; the highest retention value was found in poplar (23.56%) and the lowest retention (12.79%) in chestnut was determined. Amount of residue; 60.84% of the highest on scotch pine wood with fungus and 56.70% of the lowest value was determined on poplar wood. Thermal deterioration was determined between 226.41-405.04 o C on wood .Öğe Determination of antioxidant and antimicrobial activity of sweetgum (Liquidambar orientalis) leaf, a medicinal plant(Assoc Brasil Polimeros, 2021) Ulusoy, Hatice; Ceylan, Şule; Peker, HüseyinIn the study, sweetgum tree (Liquidambar orientalis), which is an endemic species that grows in Mugla, Koycegiz and is applied for medicinal purposes among the public, its leaves was examined. The antioxidant ability of the extract obtained from dried plant leaves has been evaluated using a variety of methods which are Total Phenolic Substance, Total Flavonoid, FRAP, CUPRAC, DPPH, and ABTS(+). Simultaneously, the antimicrobial activity of the plant extract was examined using disk diffusion and microdilution methods to determine the minimum inhibitor concentration (MIC). While the total phenolic content of Liquidambar orientalis extract was 96.34 mg GAE/g, the total amount of flavonoid was 2.15 mg QE/g. When the results of the antioxidant analysis were examined, it was observed that it had a good level of antioxidant activity with the results of 49.25 +/- 0.54 mmol TEAC/g according to the CUPRAC method, 39.83 +/- 0.25 mu mol Fe/g according to the FRAP method, 80.34 mu g/mL according to the DPPH method and 51.20 mu g/mL according to the ABTS(+) method. As a result of the antimicrobial analysis, it was indicated that L. orientalis extract was more effective on Staphylococcus aureus (S. aureus), which is a gram-positive bacterium and causes a wide variety of clinical diseases. Even, L. orientalis extract with an MIC value of 10 mg/mL has been found to have a higher antibacterial effect than Amoxicillin+Clavulanic acid, which is used as a standard drug in that field. This research is significant because it is the first to report the determination of all biological activities for L. orientalis, including total polyphenols, flavonoid contents, antioxidant content, and antimicrobial activity.Öğe Dye of waste tea extract with mordant-varnish and the effect of color changes on wood(Health & Environment Assoc, 2018) Atılgan, Abdi; Tan, Hüseyin; Ulusoy, Hatice; Peker, HüseyinThis study aimed to develop natural dyes for wood material that are harmless to humans and the environment. For this purpose, a tea stain and polyurethane single- and double-component water based varnish were applied by brush on the wood surfaces of pine (Pinus sylvestris L.), beech (Fagus orientalis L.), fir (Abies), and poplar (Populus sp. L.). The color change (i.e., Delta L, Delta a, Delta b) and total color change (Delta E) of the samples was determined based on the ISO 2470 standard. According to experimental results, the highest color brightness change (Delta l: -52.49) was seen in pine wood with tea dye, the highest red color change (Delta a: 11.50) was seen in pine wood with tea dye+water-based varnish, and the highest yellow color change (Delta b: 97.19) was seen in fir wood with tea dye+borax. The highest value of total color change (Delta E: 99.512) addition of borax fir wood in tea dye is obtained. Developed tea extract to waste paint, furniture processing industry has the aesthetic appearance of surface processes can be used.Öğe The effects of ımpregnation with barite (BaSO4) on the physical and mechanical properties of wood materials(Bartın Üniversitesi Orman Fakültesi, 2017) Tan, Hüseyin; Ulusoy, Hatice; Peker, HüseyinThe aim of the study was to investigate the effects of Barite on the physical and mechanical properties of wood. Barite as an impregnation material was used to be harmless to environment-related human health. Barite (BaSO4) solution was prepared with different concentrations of barite (1%, 3%, 5%), and the impregnation process of the samples were conducted according to ASTM-D 1413-76. Scotch pine (Pinus sylvestris L.) and Oriental Beech (Fagus orientalis L.) obtained from the Eastern Black sea region in Turkey were used. According to the results, it showed that each wood types, retention ratio, physical properties, and mechanical properties increased with increasing concentration of barite in the impregnation solution. For the Beech wood, the highest air-dried and dried densities were found to the samples impregnated with solution that had a 1% concentration (0.63 g/cm3 ); the highest modulus elasticity (MOE) was in samples impregnated with solution that had a 5% concentration (16920 N/mm²); the highest bending strength (MOR) was in samples impregnated with solution that had a 50% concentration (160.40 N/mm²); and the highest dynamic bending strength was in the beech impregnated with solution that had a 50% concentration (2.78 kpm/cm2 ).Öğe Evaluation of the extract obtained from various medicinal and aromatic plants “antibacterial and antioxidant⇝ in the wood industry(Pamukkale University, 2021) Peker, Hüseyin; Ulusoy, HaticeThroughout the history of mankind, various plants (medicinal aromatics etc.) have been used naturally to prevent all diseases, or they have been used in a wide range of fields, especially in the pharmaceutical industry, by cultivating in agriculture/greenhouse areas. However, as a result of the protection and coloring of the wood material by chemically, especially the indoor contamination causes negative effects on human health. The main objective of this study is to use the wooden product in wooden child toys, hospitals, sterile areas, pharmacies, wood-based materials used in the kitchen (fork, knife, serving plates and chopping boards etc.), playgrounds, dining table surfaces, nursery and kindergarten furniture, beehives etc. In addition, it will be recommended to use on all surfaces where there is an antibacterial / antioxidant effect, as well as on the surfaces with collective contact such as door handles, cabinet handles, elevator buttons and cash dispenser keys. In research, extracts of Evelik (Rumex patientia L.) and Çakşır (Ferula comunis L.) herbs (1% concentration) from medicinal aromatic plants were prepared and spruce and mahogany wood were used as wood type. According to ASTM D 143-76 principles, retention and bending resistance properties were determined by impregnation according to the results of the experiment, the highest retention (0.55%) and bending strength (100.20 N/mm2 ) were determined in Evelik plant and the optimum increase was determined when the results were compared with the control sample.Öğe Isıl işlemin orta yoğunluktaki lif levha (Mdf)’ Nın bazı mekanik ve fiziksel özellikleri üzerine etkileri(Batı Akdeniz Ormancılık Araştırma Enstitüsü Dergisi, 2013) Özalp, Murat; Altınok, Mustafa; Karakaş, İsmail; Peker, Hüseyin; Ulusoy, HaticeIn this study, perpendicular to the surface of the tensile strength and screw holding strength in the direction perpendicular to the surface of MDF, and the effect of the heat treatment on surface roughness of MDF, have been studied. Samples to use in the experiments have been prepared from MDF provided by market in accordance with the standards. MDF samples have been subjected to heat treatment in the degrees of 120 oC , 150 oC and 180 oC for 2, 4 and 6 hours. In the data of the surface perpendicular to the direction perpendicular to the surface of the screw holding strength, significant reductions have been established with the increase of temperature and time. Also, the decrease of surface roughness value has been determined with the increase of temperature and time.Öğe Karaçam odununun laminasyon özelliklerinin belirlenmesi(Batı Akdeniz Ormancılık Araştırma Enstitüsü Dergisi, 2013) Özalp, Murat; Altınok, Mustafa; Baltacı, Bekir; Ulusoy, Hatice; Peker, HüseyinIn this study, lamination of black pine (Pinus nigra Arnold) wood from Simav district of Kütahya, Dursunbey district of Balıkesir Mustafakemalpaşa district of Bursa with PVAc Adhesives was investigated . Also habitat and adhesive effects and lamination black pine wood were investigated. Laminated materials with PVAc based D2 adhesive from Dursunbey and Kemal paşa have higher bending and pressure resistance values. Adhesive resistance is higher in wood from Musatafa Kemal paşa and Simav .Öğe Mobilya ve tasarım(Batı Akdeniz Ormancılık Araştırma Enstitüsü Dergisi, 2013) Ulusoy, Hatice; Peker, Hüseyin; Atılgan, AbdiTasarımın ana amacı mevcut kaynaklardan en iyi şekilde yararlanmak ve en yüksek konfor yanında estetik, işlevsel ve ekonomik ürünlerin elde edilmesidir. Günümüzde küçük bir işletmenin bile ürün tasarımı üzerinde durması gerekmekte olup; aksi halde rekabet imkânları kısıtlamakta ve yok olmakta karşı karşıya gelebilmektedir. Herhangi bir ürünün tasarımında; malzeme, teknik gelişmeler, kültürel etkileşimler ve tasarımcının kabiliyeti gibi birçok faktör etkili olmaktadır. Tasarımda yaygın olarak bazı genel esaslardan yararlanılmaktadır. Bunlar, ürün işlevi, yapısal gereksinimler, üzerinde kullanılan malzemeler, ürünün görünümü ve üretim yöntemleri ana etkenler olurken ; çizgi, düzlem, kütle, yapı ve renk tasarım faktörlerini oluştururken; denge, oran, ritim ve birliktelik ana esaslar olarak belirtmektedir.Öğe New approach to ecological structure effects of medical aromatic plant extract/borax on the anatomical structure of wood and human/environmental health(Parlar Scientific Publications, 2022) Ulusoy, Hatice; Peker, HüseyinIn this century, in which human and environmental health are prioritized in the usage of medical aromatic plant extract and boron chemical, both separately and in combination, when the effect of wood on the anatomical structure is assessed in the context of hygiene/antimicrobials, it opens up additional areas to be addressed (indoor/outdoor spaces, hospitals, space, and so on). In order to determine the anatomical characteristics, cross -sections (transverse/radial/tangential) of the wood samples were obtained and interactions/changes in the anatomical structure were identified under the light microscope, and the retention scale was created in relation to this. The retention level of both medicinal aromatic plant extract and borax in wood is the highest in mahogany wood (2.88%), while the lowest percentage is found in oriental spruce wood (0.35%). In comparison to the control sample, the air/full dry specific density change produced good outcomes in both wood types. The highest air-dried specific density value was found in borax (0.58 g/cm3) in mahogany wood, and in caw (Ferula comunis L.) plant, borax and ferula+borax (0.38 g/cm3) in spruce wood. In both wood species, retention occurred in sap rays and there was no retention in the traheid/trahe cells, which act as conduction, and retention was determined in these cells, since they are sapphire cells and cells that act as storage.Öğe Odun komposit levha üretiminde uygulanan bazı modifikasyon teknikleri(Batı Akdeniz Ormancılık Araştırma Enstitüsü Dergisi, 2013) Ulusoy, Hatice; Baharoğlu, Mehmet; Tan, Hüseyin; Peker, HüseyinGelişen teknolojiye paralel olarak, orman ve orman ürünlerine olan talep tüm dünyada artış göstermiştir. Bu talebi karşılamak için ormanlardan elde edilen tüm ligno-selülozik materyalin orman ürünleri endüstrisinde kullanılması gerekmektedir. Bu sebepten dolayı odun esaslı kompozit panel sanayinde ki gelişim gün geçtikçe artmaktadır. Araştırmacılar tüketici isteklerini karşılamak, levhaların fiziksel ve mekanik özelliklerini iyileştirmek için bazı modifikasyon yöntemlerini, odun kompozit levha üretiminde kullanılmışlardır. İrdelenen çalışmalardan elde edilen sonuçlara göre, kimyasal modifikasyon teknikleri boyut stabilizasyon problemini çözmede etkili olurken, bazı mekanik özellikleri negatif etkilemiştir. Levha üretiminde ısıl işlem ve buharlama uygulandığında ise, kimyasal modifikasyon işlemiyle, yaklaşık benzer sonuçlar elde edilmiştir. Doğal tutkalların kullanımı ise iç mekânlara uygun, çevreci ve formaldehit emisyonu olmayan levhaların üretilmesine olanak sağlamıştır. Modifikasyon teknikleriyle, levhaların denge rutubet miktarlarının düşürülerek biyolojik dayanıklılık ve boyut stabilizasyonu sağlanmıştır. Sentetik tutkalların çeşitli katkı maddeleriyle modifikasyonu yapışmayı artırmıştırÖğe Orman Ürünleri Endüstrisinin Ekolojik Açıdan İrdelenmesi(Afyon Kocatepe Üniversitesi, 2016) Ulusoy, Hatice; Atılgan, Abdi; Peker, HüseyinKüreselleşme süreci sonucunda dünya ülkelerinin karşılaştığı en önemli problemlerden birisi de çevre ve çevre sorunları olmaktadır. Hem geçmişte hem de günümüzde ekolojik dengeyi bozan, çevre sağlığının yanı sıra doğal kaynakların sürdürülebilir yönetimini olumsuz etkileyen faktörlerden birisi de kaynakların sorumsuzca tüketimi ve çevresel sorunlara sebep olacak yapıda ve miktarda atık üretimidir. Bu artışlar sonucu meydana gelen çevre kirliliği ve ekonomik kayıplar, yaşanan çevresel problemler sonucu farkındalığın artması, yaşam alanlarına karşı toplumun beklentilerini ve profesyonel kesimin ilgi ve duyarlılığını değiştirmiştir. Yaşadığımız dünyanın ve insanlığın geleceğini tehdit eden çevre sorunları gündemimize yerleşmiştir. 1980’lerin başlarından itibaren küresel ısınma, ozon tabakasının zarar görmesi, doğal kaynakların azalması, asit yağmurları, hava, su ve toprak kirliliği, insan ve çevresinin zehirlenmesi gibi bazı tehlikeler nedeniyle tartışmalar yaşanmaktadır. Bu çalışmanın amacı; küreselleşme sonucu ortaya çıkan çevresel problemlerin orman ürünleri endüstrisini nasıl etkilediği, ekolojik açıdan nasıl önlemler alındığı konusunda yapılan çalışmaların değerlendirilmesi ve orman ürünleri endüstrisinde sürdürülebilir çevre anlayışı ile neler yapılması gerektiği hususlarının irdelenmesi amaçlanmıştır.Öğe Usage of ecological dye in wood and surface roughness(Gazi Üniversitesi, 2018) Atılgan, Abdi; Ulusoy, Hatice; Tan, Hüseyin; Peker, HüseyinIn the study, natural dye production from waste tea which, our country is one of the main sources and human / environmentally friendly was performed. In addition, surface roughness changes of wood are determined. Impregnation was carried out accordingto ASTM-D 1413-76 in consideration of the strong holding property of the produced paint and surface roughness value was determined by applying water-based varnish. The tree species were Scotch pine (Pinus sylvestris L.) and Oriental beech (Fagus orientalis Lipsky). According to the experimental results, surface roughness was found the highest value at Scotch pine (4.72 ?m and 4.66 ?m) and the lowest value at Oriental beech wood (3.83 ?m and 4.52 ?m) in the control sample and application of ecological tea paint, while the highest at Oriental beech wood (3.83 ?m) and the lowest value was Scotch pine wood in water-based varnish. In addition, it was detemined that there is a significant relationship between the anatomical structure of the wood and the application of water-based varnish on roughness.
