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  • Item
    Study of ψ(3686)→ωKK̄π decays
    (American Physical Society, 2013-05-20) Güler, N. G.; Tapan, İlhan; Bursa Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Fizik Bölümü; ITN-5046-2023; CCD-9486-2022; 57225312691; 8905787000
    Based on 106 million ψ(3686) events collected with the BESIII detector at the BEPCII, the decay ψ(3686)→ωKK̄π is studied. Enhancements around 1.44 GeV/c2 and the f1(1285) are observed in the mass spectrum of KK̄π, and the corresponding branching fraction (upper limit) is measured, as well as the branching fractions of ψ(3686) →ωK*+K-+c.c. and ψ(3686)→ωK̄*0K0+c.c., all for the first time. © 2013 American Physical Society.
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    The effects of short-term recombinant bovine somatotropin treatment on fattening performance, carcass composition and visceral organ weights in karayaka lambs in Turkey
    (Springer, 2008-05) Balcı, Faruk; Orman, Abdülkadir; Uludağ Üniversitesi/Veterinerlik Fakültesi/Zootekni Anabilim Dalı.; 0000-0001-9138-4422; AAG-9134-2021; 16062981700; 24335834100
    Recombinant bovine somatotropin (bST) was administered s.c. to lambs for 6 weeks to evaluate its effects on fattening performance, carcass composition and visceral organ weights. Twenty male Karayaka lambs were injected with 250 mg bST every two weeks. Body weight, live weight gain, feed intake and feed conversion rate were not affected by treatment. Head, feet, skin, liver, spleen, kidneys, filled and empty gastrointestinal tract, penis, testis, pelvic fat and internal fat weights were similar for the two groups. Lung weight increased by 17.4% (P < 0.01) and weight of heart decreased 22.7% (P < 0.05) in bST treated lambs. The only carcass characteristics that were affected by bST administration were limb muscle which increased from 1331 g to 1417 g (P < 0.05), loin fat which decreased from 275 g to 174 g (P < 0.01), shoulder fat which decreased from 26 g to 13 g (P < 0.01) and total fat/final weight percentage which decreased from 9.8% to 7.6% (P < 0.05). The results of this study show that prolonged release formulation of bST treatment reduces fat tissue, but does not significantly affect fattening performance or weights of visceral organs, muscle and bone.
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    Estimation of mean (RN)-R-222 concentration in water and in indoor air of Karacabey, Bursa (Turkey)
    (Parlar Scientific Publications , 2013) Yalçın, Sezai; Gürler, Orhan; Tarım, Urkiye Akar; Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Fizik Anabilim Dalı.; AAH-1837-2021; AAH-4270-2021; 14019444500; 55062460600
    Radon (Rn-222) and its decay products are the major sources of natural radiation exposure. Taking this into account, indoor radon measurement studies were carried out in some houses belonging to Karacabey district of Bursa province in Turkey using a professional radon monitor AlphaGUARD PQ 2000PRO. Also, the behavior of the radon concentration with time and its relationship with the building material was investigated. It was found that the estimated average indoor radon concentrations in the surveyed houses ranged from 18 +/- 7 to 102 +/- 33 Bq m(-3) with an overall average value of 42 +/- 14 Bq m(-3). The average value of the annual effective dose received by the residents of the studied area was estimated as 1.05 mSv. The Rn-222 activity concentration in a well water source used for drinking was measured and the annual effective dose due to consumption of Rn-222 with water was also calculated.
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    Measurement of the integrated luminosities of the data taken by BESIII at √s= 3.650 and 3.773 GeV
    (Chinese Physics C, 2013-12) Tapan, İlhan; Uludağ Üniversitesi/Fen - Edebiyat Fakültesi/Fizik Bölümü.; CCD-9486-2022; 8905787000
    Data sets were collected with the BESIII detector at the BEPCII collider at the center-of-mass energy of √s= 3.650 GeV during May 2009 and at √s= 3.773 GeV from January 2010 to May 2011. By analyzing the large angle Bhabha scattering events, the integrated luminosities of the two data sets are measured to be (44.49±0.02±0.44) pb-1 and (2916.94±0.18±29.17) pb-1, respectively, where the first error is statistical and the second error is systematic.
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    On the diophantine equation x 2+2 a • 3 b • 11 c = y n
    (Walter De Gruyter, 2013-06) Luca, Florian; Naci Cangül, İsmail; Demirci, Musa; İnam, İlker; Soydan, Gökhan; Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Matematik Bölümü.; 0000-0002-0700-5774; 0000-0002-6439-8439; 0000-0002-6321-4132; J-3505-2017; ABA-6206-2020; DUZ-5808-2022; GEK-9891-2022; 57189022403; 23566581100; 25925069700; 23566953200
    In this note, we find all the solutions of the Diophantine equation x (2) + 2 (a) center dot 3 (b) center dot 11 (c) = y (n) , in nonnegative integers a, b, c, x, y, n a parts per thousand yen 3 with x and y coprime.
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    Airborne pollen grains in Yalova, Turkey, 2004
    (Springer, 2008-10) Altunoğlu, Mustafa Kemal; Bıçakçı, Adem; Çelenk, Sevcan; Canıtez, Yakup; Malyer, Hulusi; Sapan, Nihat; Uludağ Üniversitesi/Fen Fakültesi/Biyoloji Bölümü.; Uludağ Üniversitesi/Tıp Fakültesi/Pediatrik Alerji Anabilim Dalı.; 0000-0003-4925-8902; 0000-0002-6333-3123; CBB-4116-2022; K-2981-2012; O-1244-2018; CJQ-2060-2022; DDS-8738-2022; FUI-8766-2022; 24779392600; 6701674542; 24170598000; 8988954700; 6602736554; 6602156485
    In this study, airborne pollen grains of Yalova province were investigated using VPSS 2000 from January to December 2004. During studying period, a total of 22409 pollen grains/m(3) which belonged to 46 taxa and 74 unidentified pollen grains were recorded. From the identified taxa, 26 belong to arboreal and 20 to non-arboreal plants. Total pollen grains consist of 80.50% arboreal, 19.17% non-arboreal plants and 0.33% unidentified pollen grains. In the investigated region, from arboreal plant taxa Platanus spp. (29.08%), Cupressaceae/Taxaceae (21.22%), Pinus spp. (7.34%), Alnus spp. (4.75%), Castanea spp. (3.03%), Quercus spp. (3.07%), Olea spp. (2.50%), Acer spp. (2.21%), Corylus spp. (1.41%) and Fagus spp. (1.15%), and from non-arboreal plant taxa Poaceae (10.01%), Asteraceae (2.86%), Plantago spp. (1.47%) and Artemisia spp. (1.11%) were responsible for the greatest amounts of pollen.
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    Thermoluminescence dose and heating rate dependence and kinetic analysis of ZnB2O4:0.05Dy3+ phosphor
    (Elsevier, 2018-02-01) Balcı-Yeğen, Sümeyra; Yüksel, Mehmet; Karabulut, Yüksel; Ayvacıklı, Mehmet; Can, Nurdoğan; Topaksu, Mustafa; Küçük, Nil; Uludağ Üniversitesi/Fen - Edebiyat Fakültesi/Fizik Bölümü.; 0000-0002-9193-4591; CCH-1761-2022; 24436223800
    The intention of this study is to explore the thermoluminescence (TL) behavior of beta irradiated 5% Dy3+ doped zinc borate (Zn(BO2)(2):0.05Dy(3+)) phosphor prepared using the nitric acid method. The TL glow curve corresponding from 1 Gy to 80 Gy beta irradiation (preheated at 140 degrees C) shows a maxima at c.a. 180 degrees C. The dependence of heating rate was tested and found out that thermal quenching effect was dominating on TL glow curves as the heating rate increases. The dose response of the phosphor material exposed to beta radiation was investigated. Deconvolution was applied using the peak fit method on the glow curve for optimized conditions. Also peak shape (PS), various heating rates (VHR) and computerized glow curve deconvolution (CGCD) methods were used to evaluate the trapping level parameters, namely trap depth (E), frequency factor (s) and order of kinetics (b) associated with the main glow curve in Zn(BO2)(2):0.05Dy(3+) phosphor after beta irradiation of 20 Gy. The values of trap depth corresponding with the TL glow peak at 180 degrees C were found to be 0.93 eV, 0.92 +/- 0.05 and 1.05 +/- 0.02 respectively. Furthermore W and c parameters characterizing thermal quenching based on the Mott-Seitz theory were determined as 0.31 +/- 0.04 eV and 162.55. The TL mechanism appears more likely to get second order kinetics, suggesting the probability of re-trapping of charge carriers by emptied traps.
  • ItemOpen Access
    Effects of aerobic exercise on bone-specific alkaline phosphatase and urinary CTX levels in premenopausal women
    (Bayçınar Medical Publishing-Bayçınar Tıbbi Yayıncılık, 2013-12) Alp, Alev; Uludağ Üniversitesi/Tıp Fakültesi/Fizik Tedavi ve Rehabilitasyon Anabilim Dalı.; ABG-2019-2020; 56256023200
    Objective: This study aimed to investigate the effects of moderate-intensity aerobic exercise on bone turnover by urinary cross-linked C-telopeptide of type I collagen (CTX) and serum bone-spesific alkaline phosphatase (BAP) in comparison with a control group. Materials and Methods: 100 premenopausal volunteers from our outpatient unit were randomized into 2 equal groups. The exercise group (n=50) performed the exercise sessions supervised by a physiotherapist for 40 min a day, 5 times a week for a duration of 2 months. The control group (n=50) maintained their sedentary lifestyle for the duration. Urinary CTX and BAP levels in the subjects were measured before and at the end of the intervention. Results: The changes in CTX and BAP from baseline were statistically significant in the exercise group for but not in the control group. When the groups were compared with each other, the exercise group was found to be superior to the control group for the change in CTX. Conclusion: Two months of regular submaximal aerobic exercise decreased bone resorption rate in premenopausal sedentary women
  • ItemOpen Access
    Karyological data and meiosis of Drassyllus praeficus (L. Koch, 1866) (Gnaphosidae) and Thanatus imbecillus (L. Koch, 1878) (Philodromidae) from Turkey
    (Tubitak Scientific and Technical Research Council Turkey, 2013) Kumbıçak, Zübeyde; Karataş, Ayla; Seyyar, Osman; Kumbıçak, Ümit; Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Biyoloji Anabilim Dalı.; AAZ-2999-2020; 16550016400
    In this study, karyotypic and cytogenetic characteristics of Drassyllus praeficus (L. Koch, 1866) and Thanatus imbecillus (L. Koch, 1878) were investigated for the first time by examining mitotic and meiotic chromosomes obtained from gonad cells. The number and the sex chromosome system of D. praeficus and T imbecillus males was 2n = 22 (X(1)X(2)0) and 2n = 28 (X(1)X(2)0), respectively. D. praeficus had 10 autosomal bivalents and 2 univalent sex chromosomes, and T imbecillus had 13 autosomal bivalents and 2 univalent sex chromosomes during the first meiotic prophase and metaphase. Both species possessed acrocentric chromosomes in their karyotypes.
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    Observation of a structure at 1.84 GeV=c2 in the 3(π+ π-) mass spectrum in J/φ → γ3(π+ π-) decays
    (American Physical Society, 2013-11-14) Tapan, İlhan; Uludağ Üniversitesi/Fen - Edebiyat Fakültesi/Fizik Bölümü.; CCD-9486-2022; 8905787000
    With a sample of 225.3 × 106 J/φ events taken with the BESIII detector, the decay J/φ → γ3 (π+ π-) is analyzed. A structure at 1.84 GeV/c2 is observed in the 3(π+ π-) invariant mass spectrum with a statistical significance of 7.6σ. The mass and width are measured to be M = 1842.2 ± 4.2-2.6 +7.1 MeV/c2 and Γ = 83 ± 14 ± 11 MeV. The product branching fraction is determined to be B (J/φ → γX(1840)) × B(X(1840) → 3(π+ π-)) = (2.44 ± 0.36-0.74 +0.60) × 10-5. No η′ signals are observed in the 3(π+ π-) invariant mass spectrum, and the upper limit of the branching fraction for the decay η′ → 3(π+ π-) is set to be 3.1 × 10-5 at a 90% confidence level.
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    Evidence for ηc(2S) in ψ(3686)→γKS0K ±π+π+π-
    (American Physical Society, 2013-03-04) Tapan, İlhan; Uludağ Üniversitesi/Fen - Edebiyat Fakültesi/Fizik Bölümü.; CCD-9486-2022; 8905787000
    We search for the M1 radiative transition ψ(3686) →γηc(2S) by reconstructing the exclusive ηc(2S)→KS0K±π+π +π- decay using 1.06×108 ψ(3686) events collected with the BESIII detector. The signal is observed with a statistical significance of greater than 4 standard deviations. The measured mass of the ηc(2S) is 3646.9±1.6(stat)±3.6(syst) MeV/c2, and the width is 9.9±4.8(stat)±2.9(syst) MeV/c2. The product branching fraction is measured to be B(ψ(3686)→γηc(2S)) ×B(ηc(2S)→KS0K±π+π +π-)=(7.03±2.10(stat)±0.70(syst)) ×10-6. This measurement complements a previous BESIII measurement of ψ(3686)→γηc(2S) with ηc(2S)→KS0K±π+ and K +K-π0. © 2013 American Physical Society.
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    Study of the near-threshold ω mass enhancement in doubly OZI-suppressed J/ψ→γω decays
    (American Physical Society, 2013-02-22) Tapan, İlhan; Uludağ Üniversitesi/Fen - Edebiyat Fakültesi/Fizik Bölümü.; CCD-9486-2022; 8905787000
    A 2:25 x 10(8) J/psi event sample accumulated with the BESIII detector is used to study the doubly Okubo-Zweig-Iizuka-suppressed decay modes J/psi -> gamma omega phi, omega -> pi(+)pi(-)pi(0), phi -> K+K-. A strong deviation (> 30 sigma) from three-body J/psi -> gamma omega phi phase space is observed near the omega phi mass threshold that is consistent with a previous observation reported by the BESII experiment. A partial wave analysis with a tensor covariant amplitude that assumes that the enhancement is due to the presence of a resonance, the X(1810), is performed and confirms that the spin-parity of the X(1810) is 0(++). The mass and width of the X(1810) are determined to be M = 1795 +/- 7(stat)(-5)(+13) (syst) +/- 19(mod) MeV/c(2) and Gamma = 95 +/- 10(stat)(-34)(+21)(syst) +/- 75(mod) MeV/c(2), respectively, and the product branching fraction is measured to be B(J/psi -> gamma X(1810)) x B(X(1810) -> omega phi) = (2.00 +/- 0.08(stat)(-1.00)(+0.45)(syst) +/- 1.30(mod)) x 10(-4). These results are consistent within errors with those of the BESII experiment. DOI: 10.1103/PhysRevD.87.032008
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    Randomized comparison of piperacillin-tazobactam plus amikacin versus cefoperazone-sulbactam plus amikacin for management of febrile neutropenia in children with lymphoma and solid tumors
    (Taylor and Francis, 2013-03) Demirkaya, Metin; Çelebi, Solmaz; Sevinir, Betül Berrin; Hacımustafaoğlu, Mustafa Kemal; Uludağ Üniversitesi/Tıp Fakültesi/Pediatrik Onkoloji Anabilim Dalı.; Uludağ Üniversitesi/Veterinerlik Fakültesi/Enfeksiyon Hastalıkları Anabilim Dalı.; EUG-4353-2022; JHN-1091-2023; AAH-1570-2021; CTG-5805-2022; 24331130000; 7006095295; 6603199915; 6602154166
    The objective of this study was to compare the effectiveness of piperacillin-tazobactam(PIP/TAZO) plus amikacin (AMK) (PIP/TAZO+AMK) versus cefoperazone-sulbactam (CS) plus AMK (CS+AMK) for the treatment of febrile neutropenia (FN) in children with cancer. The study was designed prospectively and randomized in 0- to 18-year-old children with lymphoma or solid tumor who were hospitalized with FN diagnosis. Consecutively randomized patients received either PIP/TAZO 360 mg/kg/day in 4 doses plus AMK 15 mg/kg/day in 3 doses or CS 100 mg/kg/day in 3 doses plus AMK 15 mg/kg/day in 3 doses intravenously. Treatment modification was defined as any change in the initial empirical antibiotic therapy. A total of 116 FN episodes were managed in 46 patients (26 boys and 20 girls) with a median age of 6.5 years (range .8-17.0) during the study period. Success rates without modification of therapy were 47.5% and 52.6% in PIP/TAZO+AMK group and CS+AMK group, respectively (P>.05). No statistical difference was found between treatment groups in terms of durations of neutropenia, fever, and hospitalization. The overall success rate in all groups was 97.4%. No major side effect was observed in either group during the course of the study. Our study is the first to compare the effectiveness of PIP/TAZO+AMK and CS+AMK therapies. Both combinations were effective and safe as empirical therapy for febrile neutropenic patients.
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    Inverse problem for sigma index
    (University of Kragujevac, 2018) Gutman, Ivan; Çevik, Ahmet Sinan; Togan, Müge; Yurttaş, Aysun; Naci Cangül, İsmail; Uludağ Üniversitesi/Fen - Edebiyat Fakültesi/Matematik Bölümü.; 0000-0002-0700-5774; GBL-2333-2022; AAG-8470-2021; J-3505-2017; 54403978300; 37090056000; 57189022403
    If G is a (molecular) graph and d(v), the degree of its vertex u, then its sigma index is defined as sigma(G) = Sigma(d(u) - d(v))(2), with summation going over all pairs of adjacent vertices. Some basic properties of sigma(G) are established. The inverse problem for topological indices is about the existence of a graph having its index value equal to a given non-negative integer. We study the problem for the sigma index and first show that sigma(G) is an even integer. Then we construct graph classes in which sigma(G) covers all positive even integers. We also study the inverse problem for acyclic, unicyclic, and bicyclic graphs.
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    The investigation of risk factors which predict postpartum depression in seasonal farm workers
    (Cumhuriyet Üniversitesi Tıp Fakültesi Psikiyatri Anabilim Dalı, 2013-12) Nebioğlu, Melike; Kabalcıoǧlu, Feray; Gültekin, Mücahit; Akbaba, Sırrı; Eroǧlu, Yüksel; Uludağ Üniversitesi/Eğitim Fakültesi/Eğitim Bilimleri Bölümü.; EJC-4150-2022; EVW-3023-2022; 55497698800; 36631661500
    Objective: The aim of this study is to investigate risk factors which predict risk of postpartum depression (PPD) for seasonal farm workers in sanliurfa province. Methods: Within this research, Sociodemographic Questionnaire and Edinburgh Postpartum Depression Scale (EPDS) were applied to 166 of the 618 confined women who live region affiliated to Ertugrul Gazi Health Center, where seasonal farm workers mainly live, through lay health workers. ANOVA and t-test were used to compare risk of PPD average by sociodemographic variables and factors related to pregnancy when data were normally distributed and the Mann-Whitney U and Kruskall-Wallis test used instead for non-normal distributions. Multiple regression analysis was applied for detecting predictive risk factors of PPD. Findings: According to findings, all of subjects were at risk of PPD. Women whose husbands were illiterate are more risk than women whose husband were graduated on either primary school and high schools. However, having risk for PPD did not differentiate other variables. Factors, which predict risk for PPD, were history of psychological disease, age at first delivery, perception of family income, lack of support person, and taking help from husband during care giving baby. Discussion: It was found that all subjects were at risk for PPD. This finding was evaluated as important. It was stemmed from environmental and cultural barriers when they encounter while migrating to work. According to standardized beta coefficients, it would be say that the most predictive factor for risk of PPD was history of psychological illness.
  • ItemOpen Access
    Risk factors for ovarian hyperstimulation syndrome: Relevance of the number of follicles, serum estradiol levels and the number of oocytes collected
    (Oxford University Press, 2013-09) Seyhan, Ayşe; Polat, Mehtap; Young Son, Weon; Yaralı, Hakan; Dahan, Michael; Ata, Barış; Uludağ Üniversitesi/Tıp Fakültesi/Kadın Hastalıkları ve Doğum Bölümü.; 0000-0003-1106-3747; C-8049-2013; 16306205100
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    The predictors of remission in major depressive disorder
    (2013) Akkaya, Cengiz; Eker, Salih Saygın; Sarandöl, Aslı; Cangür, Şengül; Kirli, Selçuk; Uludağ Üniversitesi/Tıp Fakültesi/Psikiyatri Anabilim Dalı.; Uludağ Üniversitesi/Tıp Fakültesi/Biyoistatistik Anabilim Dalı.; EKJ-8427-2022; Q-9477-2019; FVU-6404-2022; JHH-9596-2023; CZU-1387-2022; 14061855100; 36341064200; 14020405100; 8604063700; 14019745700
    Background: We aimed to determine the predictors of remission in major depressive disorder (MDD) with antidepressant treatment (AT). Methods: The subjects were recruited from the databases of the previous four studies. 178 patients were separated in to two groups at the final visit regarding remission. The patients were analyzed in terms of sociodemographic and clinical features regardless of their AT. Results: The difference in sociodemographic and clinical features was insignificant between the groups. Remitted patients had lower scores on the Hamilton Depression Rating Scale (HDRS), Montgomery-Asberg Depression Scale, Hamilton Anxiety Rating Scale, and the Clinical Global Impression Scale compared to baseline whereas Social Adaptation Self-evaluation Scale (SASS) scores were higher. To evaluate the impact of basal scores of HDRS and SASS on non remission rates, logistic regression analysis was performed. The analysis result was significant (p<0.001). Valid classification rate was 66% for this model. For this model, the scores of HDRS and SASS at visit 1 are significant risk factors for non-remission (p<0.001). As the value of HDRS increases, the risk of non-remission increases 1.095 fold (Odds ratio 95%, confidence interval: 1.045-1.147), whereas as the value of SASS decreases the risk of non-remission increases 1, 076 fold (Odds ratio 95%, confidence interval: 1.042-1.114). For each patient non-remission possibility can be predicted by "p(non remission)=1/[(1+exp (-0, 093xV1HDRS+0, 075xV1SASS)]" equivalent via this model. Conclusion: The findings of the present study suggest that severe level of depression, anxiety and social maladaptation at baseline are more likely to predict remission.
  • ItemOpen Access
    Clinical, ultrasonography and haematology of aglepristone-induced mid-gestation pregnancy terminations in rabbits
    (South African Veterinary Association, 2013) Özalp, Gözde Rabia; Temizel, Ethem Mutlu; Batmaz, Elçin Özocak; Uludağ Üniversitesi/Tıp Fakültesi/Cerrahi Anabilim Dalı.; Uludağ Üniversitesi/Tıp Fakültesi/Kadın Hastalıkları ve Doğum Bölümü.; Uludağ Üniversitesi/Tıp Fakültesi/Dahiliye Bölümü.; 0000-0003-4694-6937; AAE-3607-2019; ECV-4083-2022; FOM-0178-2022; 23985710500; 26430270100; 55387315900
    Aglepristone is a safe abortifacient in cats, dogs and rabbits. Although no serious side effects have been reported, there is no information available about the effects of the medicine on haematological parameters. For the first time clinical and ultrasonographic features and haematological profiles were evaluated in rabbits treated with aglepristone 15 and 16 days after mating. Ten healthy 10-14 month-old New Zealand White female rabbits were mated with fertile bucks and pregnancies were confirmed by ultrasound 15 days later. Of these, 5 does were treated with aglepristone (test group, n = 5) whilst the remaining five (control group, n = 5) were treated with a saline solution (0.9% NaCl). The treatment dose was 10 mg/kg body weight, administered subcutaneously once daily on two consecutive days (day 15 and 16 post mating). Ultrasonographic, clinical and haematological assessments were performed daily. Aglepristone treatment induced embryonic fluid resorptions without foetal death in mid-gestation terminations. Following ultrasonographic and haematological examinations, it was established that aglepristone is a safe abortifacient in rabbits.
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    Search for η and η′ invisible decays in J/ψ→η and η′
    (American Physical Society, 2013-01-24) Tapan, İlhan; Uludağ Üniversitesi/Fen - Edebiyat Fakültesi/Fizik Bölümü.; CCD-9486-2022; 8905787000
    Using a sample of (225.3 +/- 2.8) x 10(6) J/psi decays collected with the BESIII detector at BEPCII, searches for invisible decays of eta and eta ' in J/psi -> phi eta and phi eta ' are performed. Decays of phi -> K+K- are used to tag the eta and eta ' decays. No signals above background are found for the invisible decays, and upper limits at the 90% confidence level are determined to be 2.6 x 10(-4) for the ratio B(eta -> invisible)/B(eta ->gamma gamma) and 2.4 x 10(-2) for B(eta '-> invisible)/B(eta '->gamma gamma). These limits may be used to constrain light dark matter particles or spin-1 U bosons. DOI: 10.1103/PhysRevD.87.012009
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    Learning with peers: An interdisciplinary comparative study of learner interaction and satisfaction on an instructional design course
    (EDAM, 2013-09) Öncü, Semiral; Özdilek, Zehra; Uludağ Üniversitesi/Eğitim Fakültesi/Fen Eğitimi Bölümü.; Uludağ Üniversitesi/Eğitim Fakültesi/Bilgisayar ve Öğretim Teknolojileri Eğitimi.; 0000-0001-8549-094X; AAH-1616-2021; A-5306-2016; 35339476800; 26656970800
    The aim of this study is to examine undergraduate students' satisfaction levels through learning with peers. Specifically, students from two departments were brought into a collective group activity to understand whether they experienced different levels of satisfaction by working with peers from a different department. Data gathered from a sample of 47 Science Education (SE) and 72 Computer Education and Instructional Technology (CEIT) students during the fall 2011 semester. Students overall were highly satisfied. Students of the two departments did not significantly differ from each other in terms of satisfaction. That means they equally enjoyed the activity. There were six themes that were identified that cause satisfaction in this interprofessional work: Performing responsibilities, socialization, cohesion, work habits, learning in general, and professional development. The most prominent theme was cohesion, and it emerged out of mostly positive but also negative student opinions. The least prominent was professional development and it was mainly expressed as a positive theme. It is argued that students do not articulate the scope of the study as much as they can. It is also argued that the nature of the assigned task let them consider the social aspects more than the other aspects.