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Ying-Cheng Chiang,Chi-An Chen,Chun-Ju Chiang,Tsui-Hsia Hsu,Ming-Chieh Lin,San-Lin You,Wen-Fang Cheng,Mei-Shu Lai 대한부인종양학회 2013 Journal of Gynecologic Oncology Vol.24 No.4
Objective: To investigate the changes of incidence and prognosis of epithelial ovarian cancer in thirty years in Taiwan. Methods: The databases of women with epithelial ovarian cancer during the period from 1979 to 2008 were retrieved from the National Cancer Registration System of Taiwan. The incidence and prognosis of these patients were analyzed. Results: Totally 9,491 patients were included in the study. The age-adjusted incidences of epithelial ovarian cancer were 1.01, 1.37, 2.37, 3.24, 4.18, and 6.33 per 100,000 person-years, respectively, in every 5-year period from 1979 to 2008. The age-specific incidence rates increased especially in serous, endometrioid and clear cell carcinoma, and the age of diagnosis decreased from sixty to fifty years old in the three decades. Patients with mucinous, endometrioid, or clear cell carcinoma had better long-term survival than patients with serous carcinoma (log rank test, p<0.001). Patients with undifferentiated carcinoma or carcinosarcoma had poorer survival than those with serous carcinoma (log rank test, p<0.001). The mortality risk of age at diagnosis of 30-39 was significantly higher than that of age of 70 years or more (test for trend, p<0.001). The mortality risk decreased from the period of 1996-1999 (hazard ratio [HR], 0.90; p=0.054) to the period after 2000 (HR, 0.74; p<0.001) as compared with that from the period of 1991-1995. Conclusion: An increasing incidence and decreasing age of diagnosis in epithelial ovarian cancer patients were noted. Histological type, age of diagnosis, and treatment period were important prognostic factors for epithelial ovarian carcinoma.
Che-Chao Chiang,Min-chi Chang,Po-Tsang Chen,Fu-Ming Chiang 세계문화관광학회 2010 Conference Proceedings Vol.11 No.0
This study examines the information searching of business travelers and their behavior based on the cultural differences. Despite growing academic interest in business travel i n recent years, there has been little investigation of the information search behaviors of business travelers in a cross-culture context. The above themes are rational assumed that information search behaviour are necessary to understand. To address the identified gap s in the literature, the proposed relationships are examined and presented through using chi-square method with a survey sample. The research sample included Japanese, English and Chinese business travellers. A self-administrated questionnaire was distributed to 211 business travelers attending international conventions in Taipei. The research findings reveal that information preferences of business travelers are significantly differed from the three recognized groups in the case of Taiwan. Some significant differences in information search behaviors were recognized amongst the three recognized respondent groups. Marketing implications were also proposed and presented.
An Jen Chiang,Min-Yu Chen,Chia-Sui Weng,Hao Lin,Chien-Hsing Lu,Peng-Hui Wang,Yu-Fang Huang,Ying-Cheng Chiang,Mu-Hsien Yu,Chih-Long Chang 대한부인종양학회 2017 Journal of Gynecologic Oncology Vol.28 No.5
Objective: The malignant transformation (MT) of ovarian mature cystic teratoma (MCT)to squamous cell carcinoma (SCC) is very rare. This study analyzed cases from multiplemedical centers in Taiwan to investigate the clinicopathologic characteristics, treatment, andprognostic factors of this disease and reviewed related literature. Methods: Pathological reports of 16,001 patients with primary ovarian cancer who weretreated at Taiwan medical centers from 1990 to 2011 were reviewed. In total, 52 patients withMT of MCT to SCC were identified. Results: Among all ovarian MCTs, the incidence of MT to SCC is 0.2%. The median age ofpatients was 52 years (range, 29–89 years), and the mean tumor size was 10.5 cm (range, 1–40cm). We analyzed the patients in our study and those in the literature and determined thatearly identification and complete surgical resection of the tumor are essential for long-termsurvival. In addition, adjuvant chemotherapy or concurrent chemoradiotherapy can be usedto treat this malignancy. Old age, large tumor size (≥15.0 cm), and solid components in MCTsare suitable indicators predicting the risk of MT of MCT to SCC. Conclusion: Similar to general epithelial ovarian cancers, the early detection of MT of MCTto SCC is critical to long-term survival. Therefore, older patients with a large tumor or those with a tumor containing a solid component in a clinically diagnosed MCT should beevaluated to exclude potential MT to SCC.
Non-fillable invariant contact structures on principal circle bundles and left-handed twists
Chiang, R.,Ding, F.,van Koert, O. WORLD SCIENTIFIC PUBLISHING 2016 International Journal of Mathematics Vol.27 No.3
<P>We define symplectic fractional twists, which subsume Dehn twists and fibered twists and use these in open books to investigate contact structures. The resulting contact structures are invariant under a circle action, and share several similarities with the invariant contact structures that were studied by Lutz and Giroux. We show that left-handed fractional twists often give rise to 'algebraically overtwisted' contact manifolds, a certain class of non-fillable contact manifolds.</P>
EFFECT OF DIRECT-FED MICROORGANISMS ON BROILER GROWTH PERFORMANCE AND LITTER AMMONIA LEVEL
Chiang, S.H.,Hsieh, W.M. Asian Australasian Association of Animal Productio 1995 Animal Bioscience Vol.8 No.2
Broilers were fed diets supplemented with various levels of a probiotic (mixture of the following direct-fed microorganisms: Lactobacillus, Bacillus, and Streptococcus). Growth performance, abdominal fat, excreta, and litter ammonia level were determined. The results showed that birds fed the probiotic-supplemented diets had better weight gain (p < 0.01) and feed conversion (gain:feed;p < 0.12) when compared to the birds fed the unsupplemented diet. No differences in feed intake and abdominal fat were observed among birds fed the different experimental diets. Excreta (p < 0.05) and litter (p < 0.01) ammonia levels were reduced by dietary probiotic supplementation. A dosage of 0.25 g of the probiotic/kg of diet is needed to maiximize growth performance during both the starter and finisher periods. A higher dosage (approximate 0.5 g/kg) is needed to minimize litter ammonia production.
A simple model for explaining muon-related anomalies and dark matter
Chiang, Cheng-Wei,Okada, Hiroshi World Scientific Publishing 2019 International Journal of Modern Physics A Vol.34 No.20
<P>We propose a model to explain several muon-related experimental anomalies and the abundance of dark matter. We introduce a vector-like exotic lepton that form an iso-doublet and three right-handed Majorana fermions as an iso-singlet. A real/complex scalar field is added as a dark matter candidate. We impose a global <TEX>$ U(1)_{\mu }$</TEX> symmetry under which fields associated with the SM muon are charged. To stabilize the dark matter, we impose a <TEX>$ Z_{2}$</TEX> (or <TEX>$ Z_{3}$</TEX>) symmetry under which the exotic lepton doublet and the real (or complex) scalar field are charged. We find that the model can simultaneously explain the muon anomalous magnetic dipole moment and the dark matter relic density in no conflict with any lepton flavor-violating/conserving observables, with some details depending upon whether the scalar field is real or complex. Besides, we extend the framework to the quark sector in a way similar to the lepton sector, and find that the recent anomalies associated with the <TEX>$ b \rightarrow s\mu ^{+}\mu ^{-}$</TEX> transition can also be accommodated while satisfying constraints such as the <TEX>$ B_{s(d)} \rightarrow \mu ^{+}\mu ^{-}$</TEX> decays and neutral meson mixings.</P>
Chiang, G.,Lu, W.Q.,Piao, X.S.,Hu, J.K.,Gong, L.M.,Thacker, P.A. Asian Australasian Association of Animal Productio 2010 Animal Bioscience Vol.23 No.2
This trial was conducted to determine the effects of feeding a diet containing solid-state fermented rapeseed meal on performance, nutrient digestibility, intestinal ecology and intestinal morphology of broiler chickens. A mixed liquid culture, containing approximately 5 log cfu/ml Lactobacillus fermentum, Enterococcus faecium, Saccharomyces cerevisae and Bacillus subtilis was prepared in a 1:1:1:1 ratio. A basal substrate (BS) containing 75% rapeseed, 24% wheat bran and 1% brown sugar was mixed with the liquid culture in a ratio of 10:3. Over the 30-day fermentation, isothiocyanates were reduced from 119.6 to 14.7 mmol/kg. A total of 168, day-old male Arbor Acres broiler chicks were assigned to one of three dietary treatments including a corn-soybean meal based control diet as well as two experimental diets in which the control diet was supplemented with 10% of the BS containing unfermented rapeseed meal or 10% of the BS containing rapeseed meal subjected to solid state fermentation. There were 8 pens per treatment and 7 birds per pen. From days 19-21 and days 40-42, uncontaminated excreta were collected from each pen for digestibility determinations. In addition, digesta from the colon and ceca were collected to determine the number of lactobacilli, enterobacteria and total aerobes. The middle sections of the duodenum, jejunum, and ileum were collected for intestinal morphology. Over the entire experimental period (d 1-42), the weight gain and feed conversion of birds fed fermented rapeseed meal were superior (p<0.05) to that of birds fed nonfermented rapeseed meal and did not differ from the soybean control. On day 42, birds fed fermented rapeseed meal had higher (p<0.05) total tract apparent digestibility coefficients for dry matter, energy, and calcium than birds fed non-fermented rapeseed meal. Colon and ceca digesta from broilers fed the fermented feed had higher (p<0.05) lactobacilli counts than birds fed the control and non-fermented rapeseed meal diets on day 21 and 42. Fermentation also improved (p<0.05) villus height and the villus height:crypt depth ratio in the ileum and jejunum on day 21 and 42. The results indicate that solid-state fermentation of rapeseed meal enhanced performance and improved the intestinal morphology of broilers and may allow greater quantities of rapeseed meal to be fed to broilers potentially reducing the cost of broiler production.