2,036 research outputs found
Integrable and Chaotic Polarization Dynamics in Nonlinear Optical Beams
No full textHu, T.C.; Holm, D.D.; Tratnik, M.V.. (1989). Integrable and Chaotic Polarization Dynamics in Nonlinear Optical Beams. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/4952
Optimization of Globally Convex Functions
No full textHu, T.C.; Klee, Victor; Larman, David. (1989). Optimization of Globally Convex Functions. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/4949
T.C. Powers, '25, author of the book, "Leakage: The Bleeding of the American Economy"
No full textIncludes letters from the American Society for Testing Material about T.C. PowersBlack and WhitePeople: Powers, T.C
FIGURE 1 in Gastrodia damingshanensis (Orchidaceae: Epidendroideae): a new mycoheterotrophic orchid from China
No full textFIGURE 1. Habitat and habit of Gastrodia damingshanensis A.Q. Hu & T.C. Hsu (at the type locality). Photographed by T.C. Hsu.Published as part of Hu, Ai-Qun, Hsu, Tian-Chuan & Liu, Yan, 2014, Gastrodia damingshanensis (Orchidaceae: Epidendroideae): a new mycoheterotrophic orchid from China, pp. 256-262 in Phytotaxa 175 (5) on page 258, DOI: 10.11646/phytotaxa.175.5.3, http://zenodo.org/record/514395
FIGURE 3. Gastrodia damingshanensis A.Q in Gastrodia damingshanensis (Orchidaceae: Epidendroideae): a new mycoheterotrophic orchid from China
No full textFIGURE 3. Gastrodia damingshanensis A.Q. Hu & T.C. Hsu (Plate based on T.C. Hsu & A.Q. Hu 6407). A. Habit. B–E. Flower (B. Top view, C. Side view, D. Bottom view, E. Frontal view). F. Perianth tube, expanded and flattened. G. Lip and column, side view. H. Column with anther attached, side view. I–K. Column without anther (I. Back view, J. Front view, showing melted pollinia on stigma, K. side view). L–M. Lip. N–O. Anther cap (N. top view, O. bottom view). P. Pollinia. Photographed by T.C. Hsu.Published as part of Hu, Ai-Qun, Hsu, Tian-Chuan & Liu, Yan, 2014, Gastrodia damingshanensis (Orchidaceae: Epidendroideae): a new mycoheterotrophic orchid from China, pp. 256-262 in Phytotaxa 175 (5) on page 260, DOI: 10.11646/phytotaxa.175.5.3, http://zenodo.org/record/514395
(14(3):49-59)SURVEY AND CONTROL ON THE VERTICILLIUM DISEASE IN CULTIVATED MUSHROOM
No full text1 洋菇褐斑病是本省洋菇栽培上發生最普遍之一種病害，輕微時影響洋菇品質，嚴重時工廠不予收購，致務農損失慘重。
2 洋菇褐斑病多發生於高溫多濕之菇舍，尤以噴水後菇舍通風不良時發生最為旺盛。
3 洋菇褐斑病在本省為害程度是由南，中，北部依次遞減，其為害程度普遍是在3%以下者居多，在5%以上者甚少。
4 Dithane M-22及Brestan 60 兩種殺菌藥劑，在低濃度0.0125%時對洋菇褐斑病病原菌胞子發芽均有顯著之抑制藥效，但Dithane M-22 之擴散性較Brestan 60為大，所以二者形成之制菌圈有顯著之差異，二者可施用濃度Dithane M-22是0.0125~0.5%，Brestan 60是0.0125~0.025%，但在實驗室菇體接種噴藥試驗之有效濃度以Dithane M-22 0.1%，Brestan 60 0.05%為最好，其與前者濃度之相差原因是菇體接種所須實際濃度較高之故。3
5 施用Dithane M-22 0.1%及0.2%兩種濃度噴撒菇體及覆土，而以0.2%濃度噴撒於覆土表面獲得效果最佳，生出菇體遺毒餘留量為零，故在推廣預防本病害時較為理想。
1. The brown spot disease of mushroom caused by Verticillium agaricicotum widely spread and led to the serious loses in the mushroom cultivation in Taiwan.
2. The disease was more prevalent in the southern part than in the northern part of Taiwan. Generally speaking, the cultivated mushrooms were injuried by the infection of the disease slightly and the disease rarely occurred severely.
3. High temperature and heavy humidity, especially when there is poor ventilation in the mushroom house after watering favoured the occurrence of brown spot disease.
4. Both Dithane M-22 and Brestan 60 showed the inhibiting effect on the spore germination of the causal organism at the rather low concentration 0.0125%. Effective concentrations of Dithane M-22 and Brestan 60 to inhibit the mycelial growth were 0.0125-0.5% and 0.0125-0.025% respectively. Dithane M-22 at 0.1% and Brestan 60 at 0.5% were the most effective ones for the inhibition of disease occurrence on mushrooms.
5. For practical disease control, spraying 0.2% water suspension of Dithane M-22 on casing layer is recommendable, because the chemical residues are nearly at zero
FIGURE 2. Gastrodia damingshanensis A.Q in Gastrodia damingshanensis (Orchidaceae: Epidendroideae): a new mycoheterotrophic orchid from China
No full textFIGURE 2. Gastrodia damingshanensis A.Q. Hu & T.C. Hsu (drawing based on T. C. Hsu & A. Q. Hu 6407). A. Habit. B–E. Flower (B. Top view, C. Bottom view, D. Longitudinal section, E. Frontal view). F. Perianth tube, expanded and flattened. G. Lip and column, side view. H. Lip. I–J. Column (I. Front view, J. Back view). K–L. Anther cap (K. Top view, L. Bottom view). M. Pollinia. Illustrated by T.C. Hsu.Published as part of Hu, Ai-Qun, Hsu, Tian-Chuan & Liu, Yan, 2014, Gastrodia damingshanensis (Orchidaceae: Epidendroideae): a new mycoheterotrophic orchid from China, pp. 256-262 in Phytotaxa 175 (5) on page 259, DOI: 10.11646/phytotaxa.175.5.3, http://zenodo.org/record/514395
On Spaces Extremal for the Gomory-Hu Inequality
No full textLet (X, d) be a finite ultrametric space. In 1961 E.C. Gomory and T.C. Hu proved the inequality vertical bar Sp(X)vertical bar <= vertical bar X vertical bar where Sp(X) = {d(x, y): x, y is an element of X}. Using weighted Hamiltonian cycles and weighted Hamiltonian paths we give new necessary and sufficient conditions under which the Gomory-Hu inequality becomes an equality. We find the number of non-isometric (X, d) satisfying the equality vertical bar Sp(X)vertical bar = vertical bar X vertical bar for given Sp(X). Moreover it is shown that every finite semimetric space Z is an image under a composition of mappings f : X -> Y and g : Y -> Z such that X and Y are finite ultrametric spaces, X satisfies the above equality, f is an e-isometry with an arbitrary epsilon > 0, and g is a ball-preserving map
(13(4):36-47)A PRELIMINARY REPORT ON MUSHROOM DISEASE SURVEY FOR THE TWELVE MONTHS ENDING 3lth OCTOBER, 1964, IN TAIWAN.
No full text本報告係調查臺灣省52~53年期洋菇栽培季節所發生洋菇病害種類，為害程度及其罹病率，玆將調查結果簡述如下：
(一） 本省發生之洋菇病害計有六種：
1. 褐斑病（Verticillium agaricicotum Sawada）;
2. 洋菇塊菌病（Pseudobalsmia microspora Fish）;
3. 綠黴病（Penicillium spp.）;
4. 洋菇凋萎病（Fusarium spp.）;
5. 褐皮病（Myriococcum Praecox Fr.）;
6. 白皮病(Monilia fimicol (Cost & Mat Arnaud & Bertholet)。
(二) 該六種病害中為害程度較重者是褐斑病(Verticillium agaricicotum)及洋菇塊菌病(Pseudo balsamia microspora，前者主要為害洋菇子實體，其病徵為顯明之褐色不規則小斑點逐漸擴大凹陷，呈深褐色或暗褐色，嚴重時洋菇子實體畸形凹陷，品質降低，後者主要為害洋菇菌絲，其病徵為堆肥中洋菌絲逐漸退化成水濕狀而致消失，堆肥或覆土表面該病原菌產生許多白色腦狀子囊殼，該二種病害誠為當前本省洋菇病害防治工作，及洋菇生產事業極重視問題，其餘四種病害為害輕微，對本省洋菇生產影響甚小。
(三) 該六種病害其罹病率按其大小順序如下：
1. 褐皮病（44.16%）;
2. 白皮病（27.94%）;
3. 褐斑病（24.73%）;
4. 洋菇塊菌病（8.92%）;
5. 綠黴病（4.04%）;
6. 洋菇凋萎病（2.49%）。
(四) 新建菇舍無論磚房、草房、土房，皆較舊菇舍（使用二年以上者）發生病害較少，其受害程度，罹病率亦較輕，舊菇舍一般因使用前後未經徹底實施菇舍消毒，故極易發生病害，其中磚房、土房比草房發生病害較重。
This report is the results of mushroom disease K. Z. Hu, T. C. Dough and James C. M. Mao survey which was begun on October 1, 1963 and ended on October 31, 1964, in Taiwan (Formosa), and the kinds of mushroom diseases, their damage de grees, and infected percentage.
(1) According to the results of this survey, there are six Kinds of mushroom diseases occurring in mushroom shelters. They are Brown spot (Verticillium agaricicotum), Truffle disease (Pseudobalsamia microspora), Green mould (Peni-cillium spp.), Damping-off (Fusarium spp.), Brown plaster mould (Myriococcurn praecox), and white plaster mould (Monilia fimicola).
(2) Among the six, mushroom diseases, Brown spot (Verticillium agaricicotum) and Truffle disase (Pseudobalsamia microspora) are the most important mush-room diseases and make a serious infection and damage in Taiwan. The former attacks the fruitbody of mushrooms. The first symptons of infection, due to Verticillium agaricicotum, is the production of light brown, small superficial, irregularly spots on the caps of mushrooms. As these spots extend in diameter there is coalescing into dark brown blotches. In more severe attacks the mushrooms become distorted and dry leathery tissue. The later attacks the mycelium of mushrooms. The symptom is the compost, which have been fieled with mushroom mycelium, in the affected areas seems normal at first, then the mushroom mycelium slowly degenerates into a soggy mass, and finally disappears. The small brains (“calves hrains”) are produced in great abundance in the compost or casing layer by the pathogen. Now it is an important problem how to control them effectively and decrease the damage of mushroom pro-duction in Taiwan. The Green mould, Damping off, Brown plaster mould and white plaster mould appear to be of only minor important and less damage.
(3) The order of infected percentage of those fungi are given below:
a. Brown plaster mould (Myriococcum raecox): 44.16%
b. White plaster mould (Monilia .firnicola): 27.94%
c. Brown spot (Verticillium agaricicotum): 24.73%
d. Truffle disease (Pseudobalsamia microspora): 8.92%
e. Green mould (Penicillium spp.): 4.04%
f. Damping-off (Fusarium spp.); 2.49%
(4) In spite of the various mushroom shelters, such as brick wall house, mud wall house, and cottage, the new builting of mushroom shelters has reduced the incidence of those diseases and less damage or infected percentage than those of old mushroom shelters－to be used more than two years. In general, the old mushroom shelters in which the diseases are easily occurred during the reason of growing mushrooms have never been disinfected completely ofter empty before use in Taiwan. For this reason, there are more serious diseases being carried over into the next crop in brick wall or mud wall house than those of cottage
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