Aeration of bread dough influenced by different way of processing     

S.H. Peighambardoust  E. Fallah  R.J. Hamer  A.J. van der Goot 《Journal of Cereal Science》2010

The effect of steady shearing versus z-blade mixing on mechanical aeration and gas retaining ability of the dough during processing and subsequent proofing and bread baking stages was investigated. Reduction in moisture content led to reduction in both static and dynamic densities of z-blade mixed dough. At low moisture content, dough had higher consistency and tended to physically entrap more air bubbles upon processing, leading to a higher dough volume and, thereby a low density. The results showed that both processes led to similar mechanical aeration as measured by static dough density immediately after processing. Shearing at a low rotational speed, led to similar proofing dough volume as z-blade mixing did. Nevertheless, both dough expansion test and breadmaking trials showed a significant reduction in gas retaining ability of sheared dough, especially at higher rotational speeds. This is explained by the fact that higher shear rates could break up the gluten network and negatively influence gas retaining ability. The results revealed the influence of processing conditions; e.g. the type of deformation flow on dough aeration. Furthermore, it was shown that rotational speed in the shearing system influences the aeration and gas holding ability of the dough during proofing and baking processes.  相似文献   

Application of Biochar and Compost for Enhancement of Rice (Oryza Sativa L.) Grain Yield in Calcareous Sandy Soil     

Fardin Sadegh-Zadeh  Sepideh Fallah Tolekolai  Mohammad Ali Bahmanyar  Mostafa Emadi 《Communications in Soil Science and Plant Analysis》2018,49(5):552-566

The application of compost to calcareous soils by farmers is a well-established practice and has been shown to improve yields. However, incorporation of biochar and mixture of biochar and compost into calcareous soils is a relatively novel concept for improving soil quality and yield since calcareous soils comprise a large scale of soils worldwide. The objective of this study was to determine the effects of the co-application of biochar and compost on the soil properties, nutrient status and grain yield of rice in calcareous sandy soil. The experiment was conducted in a factorial arrangement based on randomized complete block design with three replications. The compost application rates were 1% and 3% (w/w; compost/soil) and the applied rates of biochars (rice straw biochar, RSB; sugarcane bagasse biochar, SBB) were 0.3% and 0.9% (w/w; biochar/soil). The results showed that soil pH decreased with increasing application rates of either compost or biochars. However, soil EC was enhanced through increasing the application rates of compost and biochars. The co-application of biochar and compost improved soil total N and available P concentrations. The soil available K increased with increasing the rate of incorporated biochars and compost. An increase of soil available K was more predominate with the application of RSB than SBB. The RSB, also, added a considerable amount of silicon (Si) to the soil. The co-incorporation of biochars and compost enhanced soil available concentrations of Fe, Zn, Cu, and Mn as well. The RSB was more effective than the SBB in grain yield enhancement almost certainly due to a higher Si content in RSB. Furthermore, the concurrent application of biochars and compost increased grain yield more than applying them individually. A higher application rate of biochar and compost induced a higher grain yield. The co-application of highest rates of RSB (0.9%) and compost (3%) induced the highest grain yield (26.1 g/pot) among the treatments. The increase in yield compare to the control were 321% and 260% for 0.9% RSB + 3% compost and 0.9% SBB + 3% compost, respectively. The increase in the grain yield was due to an improvement in the soil chemical properties and nutrients enhancement. Finally, the co-application of the highest rate of RSB (0.9%) and compost (3%) is recommended to obtain the appropriate rate of rice grain yield in calcareous sandy soil.  相似文献   

Broiler litter and inorganic fertilizer effects on seed yield and productivity of buckwheat and fenugreek in row intercropping     

Aliyeh Salehi  Seyfollah Fallah 《Archives of Agronomy and Soil Science》2017,63(8):1121-1136

We present data of a 2 years field experiment on influence of intercropping and N source on yield and yield components of fenugreek (Trigonella foenum-graecum)–buckwheat (Fagopyrum esculentum) intercrops. The experiment was conducted at the research farm, College of Agriculture, Shahrekord, Iran during 2014 and 2015. Treatments included sole cropping of fenugreek (F), sole cropping of buckwheat (B), and three intercropping ratios. Second factor was N fertilizer type: mineral chemical fertilizer (CF) or broiler litter (BL). Intercropping improved yield of fenugreek and buckwheat compared with sole cropping and BL was the more effective fertilizer especially in intercrops. Fenugreek and buckwheat in intercrops used available environmental resources for increasing pods plant^?1, seeds pod^?1, 1000-seed weight, and harvest index (HI) (for fenugreek) and clusters plant^?1 and 1000-seed weight (for buckwheat) compared to the respective sole crops in both years. The resulting land equivalent ratios (LERs) of intercrops varied from 0.99 to 1.72 and the highest LER was observed in F:B = 2:1 treated with BL. This study shows a potential yield benefit of fenugreek–buckwheat intercropping under semiarid growing conditions when planting fenugreek and buckwheat at a ratio of 2:1, respectively, and applying BL compared with sole cropping with inorganic fertilizer application.  相似文献   

Prophylactic and therapeutic efficacy of Australian‐registered insecticide formulations against Old World screwworm (Chrysomya bezziana) infestation          下载免费PDF全文

PJ James  AH Wardhana  GW Brown  DG Mayer  R Urech 《Australian veterinary journal》2017,95(8):265-272

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Reproductive performance of immobilized cryopreserved bovine semen used for timed artificial insemination          下载免费PDF全文

AH Alm‐Kristiansen  G Dalen  G Klinkenberg  L Bekk  LT Thorkildsen  KE Waterhouse  E Kommisrud 《Reproduction in domestic animals》2017,52(6):1019-1024

The SpermVital^® technology comprises embedding of spermatozoa within an alginate gel to facilitate release of sperm cells over a prolonged period in utero after AI. The aim of this study was to examine whether the survival time of spermatozoa is extended when applying this immobilization technology in combination with cryopreservation. Sperm cell survival (acrosome and plasma membrane integrity) was studied in vitro for 48 hr at physiological temperature. One dose of SpermVital^® (SV) semen was compared with single doses of Biladyl^® (B) processed semen as well as double doses of B (B double). B double was obtained by adding a second B dose the following day, thereby mimicking double AI. Furthermore, reproductive performance applying single early timed AI (TAI) with SV following oestrus synchronization was studied in a field trial. Double insemination (TAI on two consecutive days) with B semen served as control. Number of acrosome‐intact live sperm cells decreased over time in vitro for all treatments (p < .05). There was no difference between SV sperm cell survival and B double after 24 hr (p > .05). However, after 48 hr, SV sperm cell survival was higher than B double (p < .05). Moreover, multivariate analysis showed that the outcome of single early TAI with SV was not significantly different from B double (p > .05). Likelihood of pregnancy and calving in the heifer group was higher than in the cow group (p < .05). These results imply that spermatozoa immobilized in alginate gel have prolonged survival.  相似文献   

Introduction of sustainable management tools in central Zagros forests of Iran     

Nastaran Nazariani  Asghar Fallah  Majid Lotfalian  Mojtaba Imani Rastabi 《Journal of Sustainable Forestry》2017,36(3):199-212

Zagros forests are one of the vegetative regions which have been located in the west of Iran. The investigation of sustainable forest management in Zagros is one of the key issues which make us to consider the challenges concerned with the protection of forest resources and socioeconomic problems of local people. Demand for criteria evaluation and indicators for sustainable forest management from local to national level to conduct administrative affairs have been increased. The aim of the present study is to evaluate 7 criteria and 65 sustainable indicators which have been utilized in the Near East. Accordingly, a questionnaire, with its reliability confirmed by experts, was distributed among involved participants. The results indicated that the Cronbach’s alpha coefficient for the questionnaire was 0/729. Then, using DEMATEL model, the sustainability criteria were prioritized and the significant correlation among them determined. Likert scale was also utilized to rank all the indicators, and in terms of their relative weight they were compared with. The result indicated that the most significant criteria were legal, political, and institutional frameworks, and protective functions of forest criterion were the most influential factor. By analyzing the experts’ attitudes, reliance on natural regeneration indicator with the relative weight of 31/15% was the most significant criteria in the region. The existence of number of seed provenance with the relative weight of 9/17% was the least significant role. At the end, 27 verifiers, 25 threshold values, and the most significant indicators in this research were determined.  相似文献   

Angiotensin Converting Enzyme in Bovine Ovarian Follicular Fluid and its Relationship with Oestradiol and Progesterone     

AH Nielsen  KH Schauser  B Svenstrup  & K Poulsen 《Reproduction in domestic animals》2002,37(2):81-85

The purpose of the present study was to identify angiotensin converting enzyme (ACE) in bovine ovarian follicular fluid and to relate the ACE activity to the phase of the oestrous cycle, pregnancy, and the follicular fluid concentrations of oestradiol and progesterone. The ACE activity was similar to that found in bovine serum and was completely inhibited by the specific ACE inhibitor captopril. The 50% inhibitory concentration (IC₅₀) was 1.4 × 10^?8 mol/l (range 0.8 × 10^?8 to 5.0 × 10^?8 mol/l; n=6), which is similar to that found in bovine and human serum. The ACE activity did not differ in the pre‐ovulatory and luteal phase, pregnancy or cystic follicles. It correlated with the follicular fluid concentration of progesterone in cycling cows (ρ=0.476; p < 0.005; n=36), but did not correlate with the diameter of the follicles, the follicular fluid concentration of oestradiol or the ratio between the oestradiol and progesterone concentrations. The demonstration of ACE in bovine ovarian follicular fluid provides further evidence for the presence of a local renin–angiotensin system in the bovine ovary.  相似文献   

Levator Nasolabials Muscle Transposition to Prevent an Orosinus Fistula after Tooth Extraction in Horses     

PAUL G. ORSINI DVM    MICHAEL W. ROSS DVM  Diplomate ACVS  AMIR N. HAMIR BVSc  MSC  PhD  MRCVS  Dipiomate AH 《Veterinary surgery : VS》1992,21(2):150-156

The ventral part of the levator nasolabialis muscle was transposed to the alveolar defect after sinusotomy and tooth extraction in five normal horses and six horses with a tooth root abscess and sinusitis. In the normal horses at weeks 6, 10, 14 and 18, the transposed muscles remained viable and were incorporated into the recipient sites, and orosinus fistulae did not form. Histologically, there was a progressive transition from muscle to fibrous tissue. There was no facial deformity or loss of nasal function at the donor site. A localized abscess was associated with incomplete removal of tooth root fragments in one horse. After 1 year or more, five horses treated for dental disease had complete resolution of clinical signs. One horse continued to have intermittent mild nasal discharge.  相似文献