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Ultrastructural Study On The Ovarian Wall And The Oviduct Of The Asellus Aquaticus (Crustacea: Isopoda), B. Melike Erkan Jan 1998

Ultrastructural Study On The Ovarian Wall And The Oviduct Of The Asellus Aquaticus (Crustacea: Isopoda), B. Melike Erkan

Turkish Journal of Zoology

In this study the ovarium, ovarian wall and oviduct of Asellus aquaticus ( A. aquaticus) (Crustacea: Isopoda) were investigated by stereomicroscopy, phase contrast microscopy and light microscopy. Long, tube-shaped, separate ovaries of A. aquaticus are located dorsolateral to the gut. The germinal zone is confined to the ventral region of the ovary as a thin band. The ovarian wall is composed of a few fibrous layers. The oviduct is located in the anterior one-third of the ovary, not in the central part. The sheath of the oviduct was found to possess some muscle cells, a feature first noted in this …


Sister Chromatid Exchange In Cultured Humanlymphocytes Treated With Carbosulfan, Ethlycarbamate And Ethly Methanesulfonat Separatelyand In Mixtures, Eyyüp Rencüzogullari, Mehmet Topaktas Jan 1998

Sister Chromatid Exchange In Cultured Humanlymphocytes Treated With Carbosulfan, Ethlycarbamate And Ethly Methanesulfonat Separatelyand In Mixtures, Eyyüp Rencüzogullari, Mehmet Topaktas

Turkish Journal of Biology

The aim of this study was to investigate the ability of Carbosulfan (the effective ingredient in Marshal, a carbamate insecticide/nematocide), Ethyl Carbamate (EC=carcinogen and Ethyl Methanesulfonat (EMS=mutagen) separately and in mixtures to induce sister chromatid exchange (SCE) in human lymphocytes and to nivestigate whether the test substances, as a mixture had any syn-ergistic or antogonistic effect. Carbosulfan separately weakly induced SCE during the 48 hour treat-ment. Although EC separately could not induce SCE, EMS separately induced dose-dependently SCE at 24 and 48 hour treatments. EC increased the RI, while Carbosulfan and EMS decreased it during the 48 hour treatment. The …


Pal-Like Protein Present In Chromatium Vinosum, H. Benan Dincturk, David B. Knaff Jan 1998

Pal-Like Protein Present In Chromatium Vinosum, H. Benan Dincturk, David B. Knaff

Turkish Journal of Biology

PAL is a peptidoglycan-associated lipoprotein found in the cell membranes of many Gram-negative bacteria. The presence of PAL has been demonstrated in Escherichia coli and many bacteria. In this paper, we show the presence of a gene coding for a PAL-like protein in C. vinosum, a photosynthetic bacteria and the partial sequence of the PAL gene.


The Role Of Protein Synthesis On The Adhesionstrength Of Chl Cells, Ali Yildirim, William Jd Whish Jan 1998

The Role Of Protein Synthesis On The Adhesionstrength Of Chl Cells, Ali Yildirim, William Jd Whish

Turkish Journal of Biology

Cells require protein synthesis to perform the adhesion function properly. In order to dis-cover the effect of endogenous protein synthesis on CHL cell adhesion; the adhesion strengths of cul-tured Chinese Hamster Lung (CHL) cells that were grown for 24 hours on the glass surface in the pres-ence of 1µgml -1 of cycloheximide or emetine or, both were measured quantitatively using a converg-ing laminar flow chamber. The inhibition of protein synthesis by above drug(s) reduced cell adhesion strength significantly. Hence critical shear stress of detachment of cell were 8.68±1.52 Nm -2 , 8.13±1.48Nm -2 , and 6.57±1.01Nm -2 , respectively. While …


Sex Pheromones Of The Cereal Pest Eurygaster Inte-Gricepsputon (Heteroptera: Scutelleridae)- Atheoretical Study, Lemi Türker Jan 1998

Sex Pheromones Of The Cereal Pest Eurygaster Inte-Gricepsputon (Heteroptera: Scutelleridae)- Atheoretical Study, Lemi Türker

Turkish Journal of Biology

AM1-type molecular orbital calculations were performed on the geometry-optimized struc-tures of various 4-(1', 5' - dimethly -4' - heptenylidene) -1- methylcyclohexene isomers. It was found that the major component (4Z, 4'E isomer) of the sex pheromone of Eurygoaster integriceps is very dissimilar in chemical composition to the other isomers, although the stabilities and heats of the for-mation characteristics are comparable. However, some small molecules resembling only a part of the pheromone might exhibit some partial activity.


Recent Developments In Molecular Genetics Of Plantdisease Resistance, Hüseyin Basim Jan 1998

Recent Developments In Molecular Genetics Of Plantdisease Resistance, Hüseyin Basim

Turkish Journal of Biology

The field of plant-microbe interactions has seen several recent break-throughs as cloning and characterization of resistance ( R) genes from plants and avirulence ( avr) genes from pathogens. Although genetics, histology, and biochemistry of plant disease resistance are well known at the cellu-lar and population levels, a full understanding of pathogen resistance in plants at molecular level is recently becoming feasible throught cloning and sequencing of several putatively interacting plant and pathogen genes. This knowledge may lead to the establishment of important strategies in plant dis-ease control. The objective of this review is to provide a short and selective overview …


Correlations Between Changes In The Amount Ofendogenous Phytohormones And Flowering In Thesafflower ( Carthamus Tinctoriusl.), Hasan Baydar, Salih Ülger Jan 1998

Correlations Between Changes In The Amount Ofendogenous Phytohormones And Flowering In Thesafflower ( Carthamus Tinctoriusl.), Hasan Baydar, Salih Ülger

Turkish Journal of Biology

Changes in the amounts of endogenous gibberellic acid (GA 3 ), indole-3-acedic acid (IAA) and abscisic acid (ABA) during different growth periods of the safflower were studied by high-perfor-mance liquid chromatography (HPLC). A correlation was confirmed between low levels of GA 3 , as well as high levels of ABA, and the initia-tion of flowering. IAA reached its maximum level during bud formation, indicating that IAA might play an active role in the differentiation of bud formation. Changes in the amount of endogenous phytohormones in flower buds located in different parts of the plant indicate that ABA in particular plays …


A Study On The Phytoplankton Of Hasan Uğurludam Lake (Samsun-Turkey), Arif Gönülol, Olcay Obali Jan 1998

A Study On The Phytoplankton Of Hasan Uğurludam Lake (Samsun-Turkey), Arif Gönülol, Olcay Obali

Turkish Journal of Biology

The composition and seasonal variations of phytoplankton of Hasan UGURLU Dam Lake were studied using samples collected from two stations between July 1992 to December 1993. 57 taxa were identified belonging to the Bacillariophyta, Chlorophyta, Cyanophyta, Dinophyta and Euglenophyta divisions of phytoplankton. In the phytoplankton, Asterionella formosa, Cyclotella planc-tonica, Pediastrum simplex and Ceratium hirundinella caused water blooms in certain months. The light density and temperature affected the composition and seasonal variations in phytoplankton considerably. Nutrient levels in the lake did not limit the seasonal variations in phytoplankton. It was determined that Lake Hasan Ugurlu had mesotrophic characteristics because of the …


Contribution To The Geographic Distribution Ofrodent Species And Ecological Analyses Of Theirhabitats In Asiatic Turkey, Nuri Yi̇ği̇t, Ercüment Çolak Jan 1998

Contribution To The Geographic Distribution Ofrodent Species And Ecological Analyses Of Theirhabitats In Asiatic Turkey, Nuri Yi̇ği̇t, Ercüment Çolak

Turkish Journal of Biology

Rodent species in 17 selected localities were determined, and these localities were then compared with respect to rodent species composition. It was determined that a total of 27 rodent species are found in these localities, the number in each locality ranging from 6 to 12. Species previ-ously recorded in mixed and decidous forests in northern Asiatic Turkey, such as Glis glis, Muscardinus avellanarius, Microtus subterraneus and Clethrionomys glareolus, were found not to range across forested localities in west and south Asiatic Turkey in the dry summer season. It was also determined that rodents, which live in similar habitats in different …


Decolorization Of Orange Ii Dye With The Crudeculture Filtrate Of White Rot Fungus, Coriolusversi-Color, Özfer Yeşi̇lada, Birgül Özcan Jan 1998

Decolorization Of Orange Ii Dye With The Crudeculture Filtrate Of White Rot Fungus, Coriolusversi-Color, Özfer Yeşi̇lada, Birgül Özcan

Turkish Journal of Biology

Decolorization of Orange II dye was demonstrated with crude culture filtrate of white rot fungus, Coriolus versicolor. It was determined that the rate and extent of decolorization were depend-ent on the age (growth phase) of the crude culture filtrate (CCF). Dye decolorization abilities of the CCF of Funalia trogii, Pleurotus sajor-caju and Phanerochaete chrysosporium ME446, after incubation for 12 days, were also studied. Phanerochaete chrysosporium ME446 was observed to be unable to decolorize any of 4 dyes used. Cyanide and azide, which are known inhibitors of enzyme, inhibited dye decolorization ability of the CCF. Heat treatment terminated decolorization activity of …


Biodegradation Of Heptachlor By Phanerochaetechrysosporium Me 446: The Toxic Effects Ofheptachlor And Its Metabolites On Mice, Münevver Arisoy, Nazif Kolankaya Jan 1998

Biodegradation Of Heptachlor By Phanerochaetechrysosporium Me 446: The Toxic Effects Ofheptachlor And Its Metabolites On Mice, Münevver Arisoy, Nazif Kolankaya

Turkish Journal of Biology

On the basis of degradation properties of Phanerochaete chroysosporiumME 446 found in white-rot fungi in respect of many organic compounds with toxic, mutagenic and carcinogenic charac-teristics, the physiological conditions effective for the degradation of heptachlor (1, 4, 5, 6, 7, 8, 8- heptachloro-3a, 4, 7, 7a-tetrahydro-4, 7-methanoindene), an organic chlorine used in insecticides Phanerochaete chrysosporium ME were determined. The potential toxic effects of heptachlor and metabolites on mice were also investigated. For the degradation of heptachlor, the optimum pH was found to be 5, incubation period 20 days, and incubation temperature, 30 o C-35 o C, while the optimum concentrations …


Further Records Of Bats From Jordan And A Synopsis, Mazin Botros Qumsiyeh, Zuhair Sami Amr, Ratib Musa Al-Oran Jan 1998

Further Records Of Bats From Jordan And A Synopsis, Mazin Botros Qumsiyeh, Zuhair Sami Amr, Ratib Musa Al-Oran

Turkish Journal of Zoology

Recent records along with a synopsis of the known bats of Jordan are given. Twenty-four species of bats are reported from Jordan, including two additional records, Rhinolophus mehelyi and Asellia tridens. Five other bat species are suspected to occur.


Notes On Distributional Records And Some Characteristics Of Five Carnivorespecies (Mammalia: Carnivora) In Turkey, Şakir Özkurt, Mustafa Sözen, Nuri Yi̇ği̇t, Ercüment Çolak Jan 1998

Notes On Distributional Records And Some Characteristics Of Five Carnivorespecies (Mammalia: Carnivora) In Turkey, Şakir Özkurt, Mustafa Sözen, Nuri Yi̇ği̇t, Ercüment Çolak

Turkish Journal of Zoology

In this study, carnivore specimens such as Herpestes ichneumon, Hyaena hyaena, Meles meles, Vulpes vulpes, Lutra lutra from various localities were evaluated based on external and cranial morphology, and then were compared with the published papers. Thus, the present status in Turkey of these species along with distribution records were evaluated.


A New Grey Mullet Species " Mugil So-Iuy Basilewsky" (Teleostei: Mugilidae)From The Aegean Coast Of Turkey, Murat Kaya, Savaş Mater, Ali Yıldırım Korkut Jan 1998

A New Grey Mullet Species " Mugil So-Iuy Basilewsky" (Teleostei: Mugilidae)From The Aegean Coast Of Turkey, Murat Kaya, Savaş Mater, Ali Yıldırım Korkut

Turkish Journal of Zoology

Mugil so-iuyis a freshwater fish living in Amu Darya River Basin, Far East Asia. It was first introduced to the area around the Sea of Azov for fish farming but, then migrated to the Black Sea, and from there to the Sea of Marmara. The present study is the first report from the Aegean Sea. Morphometrical and meristic characteristics of the two specimens caught are described.


The Growth Features Of Tench ( Tinca Tinca L., 1758 ) In The Kesikköprüdam Lake, Ahmet Altindağ, Sibel Yi̇ği̇t, Seyhan Ahiska, Şakir Özkurt Jan 1998

The Growth Features Of Tench ( Tinca Tinca L., 1758 ) In The Kesikköprüdam Lake, Ahmet Altindağ, Sibel Yi̇ği̇t, Seyhan Ahiska, Şakir Özkurt

Turkish Journal of Zoology

In this study, the growth properties of tench ( Tinca tincaL., 1758) in the Kesikköprü Dam Lake between April 1995 and March 1996 were studied. In the specimens examined, ages ranged from I-VI in both sexes. The population was 51.43% female and 48.57% male. The fork length and weight in ranged from 16.1 to 41.4 cm and from 85 to 1350 g, respectively, and in males from 15.8 to 40.3 cm and from 83 to 1127 g, respectively. Age-length and age-weight relations were calculated according to the von Bertalanffy growth equation. The following values were obtained for females and males, …


A Study On Ecology And Biology Of Microtus Guentheridanford And Alston,1880 (Mammalia: Rodentia) In Turkey, Ercüment Çolak, Mustafa Sözen, Nuri Yi̇ği̇t, Şakir Özkurt Jan 1998

A Study On Ecology And Biology Of Microtus Guentheridanford And Alston,1880 (Mammalia: Rodentia) In Turkey, Ercüment Çolak, Mustafa Sözen, Nuri Yi̇ği̇t, Şakir Özkurt

Turkish Journal of Zoology

In this study, ecology and biology of Microtus guentheriwere investigated based on both field and laboratory observations along with its effects on agricultural crops. It was determined that this vole has a shallow burrow with numerous entrances and does not store food in its burrow. In captivity, M. guentherigave litters from September to June and a female produced 42 pups, being seven litters during a reproduction season. The duration of pregnancy varied 20 to 21 days. The average litter size was 5.5 and young were born in an average weight of 3.3 g. The fur developed at an age of …


Contribution To The Taxonomy, Distribution And Karyology Of Martes Foina(Erxleben, 1777) (Mammalia: Carnivora) In Turkey, Nuri Yi̇ği̇t, Ercüment Çolak, Mustafa Sözen, Şakir Özkurt Jan 1998

Contribution To The Taxonomy, Distribution And Karyology Of Martes Foina(Erxleben, 1777) (Mammalia: Carnivora) In Turkey, Nuri Yi̇ği̇t, Ercüment Çolak, Mustafa Sözen, Şakir Özkurt

Turkish Journal of Zoology

In this preliminary study, nine Stone Martens were recorded from different localities in Turkey. Their morphological characteristics were found to be consistent with previously published papers. However, the throat patches of Turkish Stone Martens show variations with respect to shape. In addition, it was determined that the morphologic and biometric characteristics of Turkish samples were consistent with those of M. f. syriaca. According to the karyological findings, the diploid number of chromosomes and the fundamental number were 38 and 76, respectively.


Comparative Toxicological Studies Of Rb-A (Neem Extract) And Coopex(Permethrin+Bioallethrin) Against Sitophilus Oryzae With Reference Totheir Effects On Oxygen Consumption And Got, Gpt Activity, Mohammad Arshad Azmi, Syed Naimul Hasan Naqvi, Muhammed Farhanullah Khan, Kahkashan Akhtar, Farah Younus Khan Jan 1998

Comparative Toxicological Studies Of Rb-A (Neem Extract) And Coopex(Permethrin+Bioallethrin) Against Sitophilus Oryzae With Reference Totheir Effects On Oxygen Consumption And Got, Gpt Activity, Mohammad Arshad Azmi, Syed Naimul Hasan Naqvi, Muhammed Farhanullah Khan, Kahkashan Akhtar, Farah Younus Khan

Turkish Journal of Zoology

The toxicity of a neem extract RB-a in comparison with a pyrethroid, Coopex, was studied along with their effects on GPT and GOT activities and oxygen consumption in S. oryzae. The LD 50 value of Coopex was found to be 6.128 \mug/cm 2 whereas RB-a was found not to be an acute contact poison. Even at a dose of 1257 \mug/cm 2 it could cause 34% mortality of S. oryzae. The oxygen consumption under the effects of Coopex was found to decline less i.e. at 6.12 \mug/cm 2 from 0.0005191 to 0.0006589, as compared to RB-a where the rate of …


Determination Of The Toxicities Of Fenpropathrin (Pyrethroid) And Neemformulation (Rb-A+Pbo+Tx-100) Against Alphitobius Diaperinus Adults Andtheir Effects On Transaminases, Rahila Tabassum, Syed Naimul Hasan Naqvi, Musarrat Jahan, Syed Mohammad Nurulain, Mohammad Farhanullah Khan, Mohammad Arshad Azmi Jan 1998

Determination Of The Toxicities Of Fenpropathrin (Pyrethroid) And Neemformulation (Rb-A+Pbo+Tx-100) Against Alphitobius Diaperinus Adults Andtheir Effects On Transaminases, Rahila Tabassum, Syed Naimul Hasan Naqvi, Musarrat Jahan, Syed Mohammad Nurulain, Mohammad Farhanullah Khan, Mohammad Arshad Azmi

Turkish Journal of Zoology

This report describes the determination of the toxicity of two pesticides, neem formulation (RB-a+PBO+Tx-100) and fenpropathrin, on Alphitobius diaperinus adults. The mortalities caused by the two compounds were found to be 70% for a 117.8\mug/cm 2 dose of neem formulation, and 88% for a 1.96 \mug/cm 2 dose of synthetic pyrethroid, fenpropathrin (Danitol). The LD 50 value of Danitol was found to be 0.2749 \mug/cm 2 , and that of neem formulation was found to be 58.92 \mug/cm 2 . Danitol-treated Alphitobius diaperinus adults showed inhibitions of 44.66% and 45.91% in GPT and GOT activity, respectively, Whereas insects treated with …


A Study On The Zooplanktonic Fauna Of The Dam Lakeskunduzlar And Çatören (Kırka-Eskişehir), Ahmet Altindağ, Şakir Özkurt Jan 1998

A Study On The Zooplanktonic Fauna Of The Dam Lakeskunduzlar And Çatören (Kırka-Eskişehir), Ahmet Altindağ, Şakir Özkurt

Turkish Journal of Zoology

In the present study, the zooplanktonic fauna of the Kunduzlar and Çatören dam lakes (Kirka basin-Eskişehir) was investigated during August 1994-June 1995. Eight species of Rotifera, five species of Cladocera and two species of Copepoda were identified in both dam lakes. In addition, the mean zooplankton abundance (ind. m -3 ) and physical and chemical parameters of dam lakes were given.


Influence Of Sediment On Heavy Metal Uptake By The Polychaete Arenicola Marina, Levent Bat Jan 1998

Influence Of Sediment On Heavy Metal Uptake By The Polychaete Arenicola Marina, Levent Bat

Turkish Journal of Zoology

In this study, the suitability of the polychaete Arenicola marina as a test organism using clean intertidal sediment contaminated with copper, zinc and cadmium was evaluated. Metal levels in casts were significantly lower than in unworked sediment indicating that the bioturbatory activity of lugworms might be significant in the distribution of the pollutants. This study showed that sediments contaminated with specific pollutants affected the uptake of these pollutants by Arenicola in a predictable and dose–dependant way and gave further justification for the use of this species in sediment toxicity tests.


Effect Of Paclobutrazol On Vegetative Growth And Fruit Quality Of Some Peaches Grown Insamsun, Şükriye Kurnaz Bi̇lgener, Hüsnü Demi̇rsoy, Neriman Beyhan Jan 1998

Effect Of Paclobutrazol On Vegetative Growth And Fruit Quality Of Some Peaches Grown Insamsun, Şükriye Kurnaz Bi̇lgener, Hüsnü Demi̇rsoy, Neriman Beyhan

Turkish Journal of Agriculture and Forestry

This research was carried out in Çarsamba, Samsun during 1991-1993 by using Paclobutrazol which is a growth reter-dant, three times in a year (Spring, Summer and Autumn) to Cardinal, Redhaven and Glohaven peach varieties. It was also applied from the soil in spring. It was found that the application of Paclobutrazol from the soil was more effective than the leaf application. It's application in fall did not affect the vegetatif development. The spring and summer applications of it showed similiar effects. Application Paclobutrazol at a concentration of 1000 ppm to leaves was effective on vegetative development. Application of paclobu-trazol to …


Operation Research Methods In The Forest Management Planning, Altay Uğur Gül Jan 1998

Operation Research Methods In The Forest Management Planning, Altay Uğur Gül

Turkish Journal of Agriculture and Forestry

The purpose of this study is to approximate the actual forest state to an aptimal forest state within different conversion period lenghts, to ensure the sustainability of allowable cut over planning horizon, to maximize the total present net value calculated with financial analysis. A linear programming model was developed and used to test 436 different strategies for planning of Gazipasa Forest Management Unit. The value of the objective function of the solution that maximized the total present net value is 63352171000 TL and the amount of the total volume is 9054041 m3. For the first plan period, when the objective …


Effects Of Pre-Sowing Peg And Kh 2 Po 4 Treatments On Germinationemergence And Yield Of Carrot, İbrahim Duman, Dursun Eşi̇yok Jan 1998

Effects Of Pre-Sowing Peg And Kh 2 Po 4 Treatments On Germinationemergence And Yield Of Carrot, İbrahim Duman, Dursun Eşi̇yok

Turkish Journal of Agriculture and Forestry

Studies were conducted at the fileds and laboratories of Ege University, Faculty of Agriculture, Department of Horticulture during 1994-1995 to improve germination and emergence in carrot (Daucus carota L. cv. Nantes) by priming, a presowing seed treatment. Seeds were treated with PEG-6000 (273 g/l) and KH 2 PO 4 (70 g/l) at 15°C for 10 days. Seeds were dried and taken for germination tests at the laboratory and for emergence tests in the open field. Besides germination, seedling emergence and yield were also determined in open field. According to the results the percentage of germination increased to 81% by PEG …


Effect Of Different Field Emergence Rates On The Yield And Qualiyty Of Sugarbeet(Beta Vulgaris L.) Grown With And Without Thinning, Ramazan Çakmakçi, Erol Oral Jan 1998

Effect Of Different Field Emergence Rates On The Yield And Qualiyty Of Sugarbeet(Beta Vulgaris L.) Grown With And Without Thinning, Ramazan Çakmakçi, Erol Oral

Turkish Journal of Agriculture and Forestry

This study was conducted in order to investigte the effect of field emergence levels with and without thinning on the root yield and quality of sugarbeet (cv. Eva) on the Experimental Farm of Turkish Sugar Factories Corporation in Pasinler Plateau (Erzurum) in 1992 and 1993. The experiment comparied two intra-row spacings (8 cm and 15 cm within rows), thinning (thinned and nonthinned) and three emergence levels (60, 50 and 35 %). Emergence levels were obtained by mixing seed with 0, 20 and 40 % dead seed material. Row spacing was 45 cm apart in all treatments. Laboratory germination was 90, …


The Pollen Collection Activity And Preference Of Honey Bees (Apis Mellifera) In The Natural Habitat Of Antalya And Some Morphological And Quality Properties Of Different Pollen Types, Hasan Baydar Jan 1998

The Pollen Collection Activity And Preference Of Honey Bees (Apis Mellifera) In The Natural Habitat Of Antalya And Some Morphological And Quality Properties Of Different Pollen Types, Hasan Baydar

Turkish Journal of Agriculture and Forestry

No abstract provided.


Root-Length Densities Of Lentil And Wheat And Measuring Infiltration In The Soil In Differentsoil Tillage, Lentil-Wheat Versa Fallow-Wheat Rotation Systems Undercentral Anatolian Conditions, Didar Eser, M. Sait Adak, Andreas Biesantz Jan 1998

Root-Length Densities Of Lentil And Wheat And Measuring Infiltration In The Soil In Differentsoil Tillage, Lentil-Wheat Versa Fallow-Wheat Rotation Systems Undercentral Anatolian Conditions, Didar Eser, M. Sait Adak, Andreas Biesantz

Turkish Journal of Agriculture and Forestry

The research was carried out for four years in the two locations Haymana-Ankara and Gözlü-Konya under different climate characteristics of the Central Anatolian Region. The aim of the reseach was to improve soil fertility in dry farming areas and to increase the benefit from fallow areas. Different soil tillage treatments and lentil-wheat versa fallow- wheat rotations systems resp. were examined in these experiments. According to experimental results highest root-length densities (RLD s ) of winter sown lentils were obtained in soil layers of 0-20 and 20-40 cm in comparison to deeper soil layers of 20 cm each down to 1 …


Minimization To Be Using Of Transport Model Of Transportation Costs Bytrucks At Artvin Forest District, H. Hulusi Acar Jan 1998

Minimization To Be Using Of Transport Model Of Transportation Costs Bytrucks At Artvin Forest District, H. Hulusi Acar

Turkish Journal of Agriculture and Forestry

The transportation after harvesting in forestry operation follow one another. Sixty six percent of forest road network planned in Artvin Forest District is finished. Now, the average forest road density is 10.5 m/ha in the forested areas. In the Artvin region, where the forest road density is not enough and not adequately maintained, the transportation on forest roads is only performed by forest trucks. The number of forest trucks in the region is enough and their average ages are 20 years old. These trucks are generally 3 axed and AS 600 Dodge type. After measurements on the transport by truck …


An Investigation On The Transportation By Trucks At Mountainously Regions, H. Hulusi Acar Jan 1998

An Investigation On The Transportation By Trucks At Mountainously Regions, H. Hulusi Acar

Turkish Journal of Agriculture and Forestry

Artvin Forest District, which is the best example for mountainous forest areas in Turkey, was selected a suitable study area for this investigation. Data which were collected by using the repetition time technique were analyzed. Sixty six percent of the planned forest road network in Artvin Forest District has been completed. Now, the average forest road density in the district is 10.5 m/ha. The number of forest trucks in the region is enough. Trucks are 20 years old on average. These trucks are generally 3 axed and AS 600 Dodge type. In the region, transportation by trucks takes place between …


An Investigation On The Loading And Unloading Operations In Artvin Forest District, H. Hulusi Acar Jan 1998

An Investigation On The Loading And Unloading Operations In Artvin Forest District, H. Hulusi Acar

Turkish Journal of Agriculture and Forestry

Artvin Forest District which is the best example for mountainously areas in Turkey, was selected as a suitable study area for this investigation. Data which were collected by using the repetition time technique were analyzed. In this region, the loading-unloading and landing operations were examined from the economical and technical perspectives. Time analysis were performed, historical records and thus resulting data were analyzed statistically. The results were discussed and some of the practical implications were recommended. The studies in this investigation were performed in 1995-96 years. As a result, the highest productivity on loading both the softwood and hardwood logs …