105,312 research outputs found
(23(1):38-47)STUDIES ON KEEPING QUALITY OF VEGETABLE AND FRUIT BY CONTROLLING ATMOSPHERE IN A PERMEABLE FILM PACKAGE
No full text利用可透氣性膜包裝蔬菜、水果，已被廣泛應用。然對於包裝袋內大氣成分之控制，尚鮮有作基礎研究者。本實驗利用奧氏氣體分析器，依卡爾等氏之濃度進增法測定透氣膜之透氣率，再以袋內果實重量，袋之厚度及面積等介值與蔬果在不同濃度下之呼吸率圖解來預估包裝袋內大氣成分濃度變化。並實際以香蕉、蕃茄包裝行短期之貯藏試驗，測定袋內外氣體交換情形，與預估值做比較。結果顯示，利用此法作為包裝需求之基礎，似有助於蔬果之包裝貯藏。
Green mature banana and tomato were used to study their respiration rate as a function of oxygen concentration. Some permeable films were investigated their permeability to oxygen and carbon dioxide by Karel et. al. method. The oxygen and carbon dioxide concentration in the packaging sealed bag could be predicated by graphical solution in terms of fruit weight, respiration rate, and film parameters such as voluine, thickness and permeability to oxygen and carbon dioxide. Some short-time storage experiments were also held to prove the predicated relations between time of storage and gas exchange under given packaging conditions. The results showed that it is useful in evaluation package requirements for fresh fruits and vegetables
(28(2):109-116)果實後熟生理之研究 -1. 正常後熟蕃茹與不後熟 rin 突變品種對其後熟性狀暨過氧化酶活性及其異性酶圖之差異比較
No full textFruit of tomato (Lycopcrsicum esculentum Mill.) cv. Floradel and of an isogenic mutant rin harvested at mature-green stage were ripened at 21℃ and were measured their activity and zymograme of peroxidase at designated color stages. Ripening of Floradel tomatoes were appeared to follow a pre-determined patterns; peroxidase activity increased about three times when fruit color chranged from mature-green to breaker stage; zymograme of peroxidase changed dramatically during fruit ripening. Rin mutant did not induce peroxidase activity, respiration, and ethylene evolution; fruit color changed to yellow after 99 days; zymograme of peroxidase were not changed; isozyme b and i were not appeared in rin mutant when compared with Floradel cultivar.
Failure in ripening of rin mutant is postulated that lack of some isozymes of peroxidase resulting unability to receive activator(s), then to activate peroxidase for ethylene synthesis.
正常後熟蕃茄品種 Floradel 與不後熟單因子突變種 rin 之果實於綠熟期（ Grreen-mature stage ）採收，置於 21℃下後熟。觀察其呼吸率，乙烯放出率，果色及過氧化酶活性與其異性酶圖 ( Zymograme）的變化。 Floradel 果實後熟正常，具有更年期高峰（ Climacteric rise ）現象，過氧化酶活性於後熟初期驟升至原來的三倍，異性酶圖有顯著變化且其異性酶數略有增減。 Rin 果實無法後熟，其呼吸率與乙烯放出率甚低且無顯著變化，果色經久藏漸轉成黃色。在 Floradel 品種出現被命名為 b 及 i 的異性酶並不被發現存在於 rin 品種中。 Rin 品種不後熟的原因被假定為該突變基因在染色體傳訊（ Transcription ）時為一調節基因（ Regulatory gene )，以控制構造基因 ( Structure gene ）生成 activator（s）來活化過氧酶，但該酶因缺少部份異性酶而無法被活化，導致無法製造乙烯來引發果實後熟
On Concept of "Shue" (Emptiness) in Lieh-Tzu
No full textThis paper divided into four parts: (i)preface; (ii)the conception of "shue" in Lieh-Tzu; (iii)The conception in Toaistic school in the Pre-Chin; (iv) conclusion. The author deals with this concept based upon the recent studies-the book of Lieh-Tzu is not an apocrypha. Lieh-Tzu conceived that the saint is the highest stage of human life. The issue is how do one achieve it. His answer is "shue." It has two denotations-"kung-fu" (drill) and the mental stage. "Shue" is not only in the realm of language and conceptual, but also in that of practice. The method of practice is by intellectual reflection and meditation from the concentration of consciousness to that of spirit. Finally, it can unify his spirit with nothing. Nothing is "tao" from the Taoistic point of view. Lieh-Tzu followed the method of the ancient Taoism in practice. But author contends that the method is derived from Lao-Tzu's "shue" of imitating "heaven" which is different from Kuan-Yin-Tzu's in-terpretation of it, that is, "chin" (stillness) of imitating "earth." From historical viewpoint, Lieh-Tzu dealed with the notion of "shue" in order to provide an answer to the meaninglessness of life of the people and disturbance of the society in the warring states period. The author believes that it is the right prescription for it
non-destructive growth measurement of selected vegetable seedlings
No full textnon-destructive growth measurement of selected vegetable seedlings using machine vision. ta-te lin. sheng-fu cheng. tzu-hsiu lin. meng-ru tsai. department of agricultural machinery engineering.. national taiwan university
An Interview with an Author and Editor: The View from Taiwan
No full textORCID Engagement Manager Asia-Pacific, Estelle Cheng, recently spoke with Wen-Yau Cathy Lin, an academic, author and scholarly journal editor about ORCID and its use in Taiwan
Aphelenchoides dalianensis Cheng, Hou & Lin 2009
No full textAphelenchoides dalianensis Cheng, Hou & Lin, 2009 A. dalianensis was extracted from wood slices of Pinus thunbergii (Pinaceae) and subsequent experiments showed its ability as a parasite on Pinus massoniana (Pinaceae) (Cheng et al. 2009). No other hosts have been reported for this species and its origin is still unknown since the affected samples were found close to a trade port (Cheng et al. 2009).Published as part of Sánchez-Monge, Alcides, Flores, Lorena, Salazar, Luis, Hockland, Sue & Bert, Wim, 2015, An updated list of the plants associated with plant-parasitic Aphelenchoides (Nematoda: Aphelenchoididae) and its implications for plant-parasitism within this genus, pp. 207-224 in Zootaxa 4013 (2) on page 212, DOI: 10.11646/zootaxa.4013.2.3, http://zenodo.org/record/24287
[[alternative]]The Effect of Wai Tan Kung Exercise on Energy Expenditure And Heart Rate Variability
No full text[[abstract]]The Effect of Wai Tan Kung Exercise on
Energy Expenditure And Heart Rate Variability
Graduate student: Cheng-Kun Wu
Advisor: Cheng-Chung Lin ,Ph.D.
Abstract
The purpose of the present study was to investigate the effect of long-term Wai Tan Kung exercise on heart rate (HR), energy expenditure, oxygen uptake (VO2), ventilation (VE), heart rate variability and blood pressure. Two different groups of older adults were recruited. One group subjects (n =16; 65.0 ± 4.2 yrs, 163.3 ± 7.3 cm, 63.3 ± 7.3 kg) had been participated at least 10 years of regular Wai Tan Kung exercise (long-term group, LTG), and the other (n = 16; 59.0 ± 3.7 yrs, 162.0 ± 3.9 cm, 65.7 ± 3.6 kg) had been participated as same exercise as LTG but less than one year (short-term group, STG). The results of this study showed that there were significant differences (p < .05) in rest systolic pressure, and HR, energy expenditure, VO2, VE, high frequency power (HFP) and low frequency power (LFP) during exercise between LTG and STG (p < .05). LTG subjects had a significant lower in rest heart rate and blood pressure (p < .05) than STG subjects, and the former also reached higher (p < .05) exercise intensities during exercise testing than the latter. Moreover, there were significant higher heart rate, VO2 and VE during exercise testing for LTG than STG, suggesting that LTG subjects had higher metabolic rate. Additionally, LTG had a higher HFP than STG, suggesting that there was a significant increase in parasympathetic division of autonomic nervous activity during exercise testing for LTG than STG, indicating LTG subjects may prevent from coronary artery disease and improve functions of the heart. It is concluded that older adults participate in regular long-term of Wai Tan Kung exercise have a positive effect on their cardiovascular fitness. Therefore, such kind of exercise may especially fit for older adults.
Key words: oxygen uptake (VO2), ventilation (VE), heart rate, heart rate variability, Wai Tan Kung exercise.
Dr. Lin Sun, CAU, March 2013
No full textThis video is a conversation with Dr. Lin Sun. Dr. Sun talks about an exhibit at the Woodruff Library titled "At The Boundary." Jordan Moore, AUC Woodruff Library, is the interviewer
(31(1):42-50)Effect of Harvesting Date Storage Temperature、and Packaging Material on the Decay and Quality of Orange (Citrus sinesis, var. Golden-seal)
No full text柳橙果實經樹上掛藏兩個月觀察，發現掛藏期間果實的密度、可滴定酸及可溶性固形物合量並沒有顯著改變，但落果率卻高達45.3%。在15℃下貯藏，掛藏後採收（遲採）的果實經117天之腐爛率（61.9%），遠較適時採收的果實經177 天貯藏之腐爛率（20.8%）高。適時採收的果實在5℃下貯藏128 天已出現輕微寒害現象，至177 天時更為嚴重，分別造成18.4 和81.3%的腐爛率。果皮發生大且深之褐色病斑（Scald）為寒害之主要病徵。遭受寒害的果實在架售期間有較高的腐爛增加率及果蒂褐化率。果實在10 及15℃下經128 天貯藏時會分別造成2.1 及1.3%的腐爛率，迨至177 天時，腐爛率則各高達41.4 及18.8%。果實品質隨貯藏期之延長而降低，且貯藏溫度愈高其可滴定酸和可溶性固形物損失愈多，果實貯藏177 天後己失味且有些果實微帶酸腐的異味。高密度PE 袋（厚0.01m / m）密封包奘與現行農家低密度PE 袋（厚0.03 m / m）扭轉倒置包裝對果實腐爛率或品質的保存並無顯著差異。Delayed harvesting of ‘Golden-seal’ orange was evaluated for their on-tree storage potential. Normal and delayed harvesting fruits were wrapped with high density (HD) or low density (LD) polyethylene (PE) bags and kept at 5, 10 or 15°C for long term storage.
Delayed harvesting caused high fruit-dropping rate (up to 45.5%) in two months, however, fruit qualities in terms of specific gravity, titratable acidity and total soluble solids did not change significantly during the on-tree period. When stored at 5°C, delayed harvesting fruits had high decay ratio of 61.9% after 117 days compared with 20.8% in normal harvesting fruits for 177-day storage.
Chilling injury (CI) was observed on fruits under 5°C storage condition and the major symptom was the disorder of scald. The decay losses of normal harvesting fruits at 5°C were 18.4% and 81.3%, respectively, for 128- and 177-day storage treatments. Rates of decay-increase and green-botton browning for CI fruits were also higher during shelf period.
Fruits stored at 10 and 15°C for 128 days had decay ratio of 2.1% and 1.3% respectively. The ratios increased to 41.4% and 18.8% for 177-day storage. Fruit qualities decreased during storage, especially the losses of sugar and acid at higher temperature. Off-flavor also appeared when fruits had been stored for 177 days.
There was no significant difference in either the rate of decay or the quality change between fruits wrapped with HD and LD PE bags in any temperature treatment
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