1,247 research outputs found
Chromatic uniqueness of certain tripartite graphs identified with a path / G.C. Lau and Y.H. Peng
Full text linkFor a graph G, let P (G) be its chromatic polynomial. Two graphs G and H are chromatically equivalent if P(G) = P(H). A graph G is chromatically unique if P(H) = P(G) implies that H == G. In this paper, we classify the chromatic classes of graphs obtained from K2,2,2 u Pm (m ≥ 3) (respectively, (K2,2,2 - e) u Pm (m ≥ 5) where e is an edge of K2,2,2) by identifying the end vertices of the path Pm with any two vertices of K2,2,2 (respectively, K2,2,2 - e). As a by-product of this; we obtained some families of chromatically unique and chromatically equivalent classes of graphs
Ge quantum dots sandwiched between two thick Si blocking layers to increase high detectivity
No full textStudies on the Processing of Glossogyne ten uifolia Cass.
No full text(l)常壓萃取：萃取液之pH隨萃取倍數減少而下降，折射率及乾物重則呈上升趨勢（換算萃取效果則呈下降，以60及70倍最多），色澤隨萃取倍數減少及時間增加而亮度降低紅色度增加黃色度減少。另在HPLC分析亦發現滯流時間在10.7分鐘隨加熱時問增加而減少，波長掃描亦發現42Inm吸光值隨加熱時問增加而增加。(2)高壓萃取：15分鐘高壓萃取效果已近臨界值且高於常壓2小時萃取效果，高壓萃取色澤較明亮紅色度較低黃色度較高、波長42lnm吸收值幾乎與不加熱冷萃者相同。(3)罐裝飲料研發方面結果如下：以70倍常壓萃取或80倍常壓2小時萃取液經比較不同糖種類及濃度調配口感，係以二砂及紅糖調整糖度為6°Brix者，其風味較佳。
enutfolia Cass.was one of the protophyte herbs at Peng-Hu in Taiwan. It had been as drink tea by the residents of Peng-Hu in the summer to reduce fever and as an antidote. In recently, it also has been proved possessing the live- protective function, and become more potential as the materials of health food. The purposes. of our studies are to explore the suitable conditions for extracting the active ingredients of the herbs and develop the function food in various types made of extract of the herb, including canned drink tea and gelatin products. With processing and increasing the utilization of Glossogyne tenufolia Cass., the market of the protophyte herb and the tourism of Peng- Hu will also be flourished. In our studies, the herbs of Glossogyne tenufolia Cass.were extracted under various conditions that included the times of water (w/w) to extract, extraction time and extraction temperature. The L value and a value of herb-extracting solution increased as extraction time was shortened or the volume of water used to extract was increased, whereas b value of herb-extracting solution was contrary to the effect. There are higher total soluble solid contents in herb- extracting solution with 60~70 times of water to extract, and the extracting efficiency (total soluble solid contents /weight of dry herb) come to the most in the events. When the extracting times were extended to 2 hours, the absorbances of herb-extracting solution increased over 42l~454 nm from visible-UV spectra scanning, and the peak of retention time at 10.7mm. become fading under HPLC separation with the RI detector. For preparing the canned herb-tea, the mixture of brown sugar and B grade white sugar should be added to herb-extracting solution with 70~80times water to extract to get the best flavors and the canned herb-tea sugar content arrive to 6%
A model for pseudo-Dirac neutrinos: leptogenesis and ultra-high energy neutrinos
Full text linkWe propose a model where sterile neutrinos are introduced to make light neutrinos to be pseudo-Dirac particles. It is shown how tiny mass splitting necessary for realizing pseudo-Dirac neutrinos can be achieved. Within the model, we show how leptogenesis can be successfully generated. Motivated by the recent observation of very high energy neutrino events at IceCube, we study a possibility to observe the effects of the pseudo-Dirac property of neutrinos by performing astronomical-scale baseline experiments to uncover the oscillation effects of very tiny mass splitting. We also discuss future prospect to observe the effects of the pseudo-Dirac property of neutrinos at high energy neutrino experiments. © 2016, The Author(s)3611Nsciescopu
Otacilia ailan Liu & Xu & Xiao & Yin & Peng 2019, sp. nov.
No full textOtacilia ailan sp. nov. Figs 1, 2 http://zoobank.org/NomenclaturalActs/2a628a1e-67cc-42d0-8fdf-7d40b690dc7a Type material. Holotype: ♀: CHINA: Hunan Province, Chenzhou City, Yizhang County, Mangshan National Forest Park, Jiangjunzhai Scenic Spot, 24°56.58'N, 112°56.9'E, 1240 m a.s.l., 6 December 2017, leg. H.Q. Yin, A.L. He, J.X. Liu, Y.H. Xie, Y. Yang and P. Dong. Paratypes: 3 ♀, with same data as holotype; 1 ♀, CHINA: Hunan Province, Chenzhou City, Yizhang County, Mangshan National Forest Park, Houwangzhai Scenic Spot, 24°59.4'N, 112°53.12'E, 500 m a.s.l., 5 December 2017, leg. H.Q. Yin, A.L. He, J.X. Liu, Y.H. Xie, Y. Yang and P. Dong. Etymology. The specific name is taken from the first name of Ms. Ailan He, who took part in a lot of collecting activities and collected many spider specimens; noun in apposition. Diagnosis. The new species is similar to O. biarclata Fu, He & Zhang, 2015 in having the X-shaped copulatory ducts (see Fu et al. 2015: 437, figs 1̄20), but differs from the latter species by the curved transparent bursae and the indistinct spermathecae (Figs 1B, C, 2). Male unknown. Description: Female. Habitus as in Fig. 1A. Total length 3.95, prosoma (Fig. 1A) yellow-brown, elevated in dorsal view, with radial, irregular dark grey mottled markings on surface, length 1.89, width 1.66. Eye diameters: AME 0.09, ALE 0.10, PME 0.09, PLE 0.11; interdistances: AME–AME 0.07, ALĒAME 0.03, PME–PME 0.12, ALĒALE 0.28, PLĒPME 0.08, PLĒPLE 0.43, ALĒPLE 0.12, AMĒPME 0.09. MOA 0.27 long, front width 0.24, back width 0.31. Cervical grooves and fovea distinct. Chelicerae yellow-brown, stout, with two strong setae near base in frontal view, abundant hairs along promarginal teeth, three promarginal (proximal largest, distal smallest) and six retromarginal teeth (distal largest, others equal in size). Endites yellow-brown, longer than wide. Labium longer than wide. Sternum longer than wide, yellow-brown, setae sparse. Opisthosoma elliptical in dorsal view (Fig. 1A), length 1.52, width 0.99, dark brown, with abundant patches, three bright chevron-shaped strips and long arched bright stripe on posterior part, and single arched white stripe near anus; venter yellow. Legs (Fig. 1A) yellow-brown, without annulations on distal part of femora, patellae, tibiae and metatarsi; measurements: I 8.05 (2.03, 0.57, 2.45, 2.06, 0.94); II 5.52 (1.45, 0.44, 1.57, 1.27, 0.79); III 4.78 (1.24, 0.48, 1.06, 1.23, 0.77); IV 7.78 (2.01, 0.66, 1.92, 2.34, 0.76). Leg spination (left side): Femur I pv1111, II pv11111; Tibia I v22222222, II v222222; Metatarsus I v2222, II pv11111, rv11; (right side): Femur I rv11111, II pv11; Tibia I v22222222, II v222222; Metatarsus I v2222, II pv11, rv11111. Leg formula: 1423. Spinnerets yellow brown, with abundant setae. Epigyne (Figs 1B, C, 2) with large copulatory openings located anterolaterally. Copulatory ducts short and broad. Connecting tubes, V-shaped in ventral view, with pair of large, sock-shaped, transparent bursae anteriorly. Glandular appendages short, located anterolaterally on copulatory ducts. Spermathecae indistinct, with similar diameter to copulatory ducts, posteriorly covered by posterior plate in dorsal view. Fertilization ducts located subapically at spermathecae. Distribution. Known only from the type locality in Hunan Province, China (Fig. 16).Published as part of Liu, Keke, Xu, Xiang, Xiao, Yonghong, Yin, Haiqiang & Peng, Xianjin, 2019, Six new species of Otacilia from southern China (Araneae: Phrurolithidae), pp. 438-458 in Zootaxa 4585 (3) on pages 439-441, DOI: 10.11646/zootaxa.4585.3.2, http://zenodo.org/record/264015
On the edge‐toughness of a graph. II
No full textThe edge‐toughness T1(G) of a graph G is defined as (Formula Presented.) where the minimum is taken over every edge‐cutset X that separates G into ω (G ‐ X) components. We determine this quantity for some special classes of graphs that also gives the arboricity of these graphs. We also give a simpler proof to the following result of Peng et al.: For any positive integers r, s satisfying r/2 < s ≤ r, there exists an infinite family of graphs such that for each graph G in the family, λ(G) = r (where λ(G) is the edge‐connectivity of G) T1(G) = s, and G can be factored into s spanning trees
On the higher order edge-connectivity of complete Multipartite graphs
No full textLei G be a connected graph with p> 2 vertices. For k = 7, 2,..., p - 1, the kh order edge-connectivity of G, denoted by X(K> (G), is defined to be the smallest number of edges whose removal from G leaves a graph with k + 1 connected components. In this note we determine X<K) (GJ for any complete multipartite graph Gr As a consequence, we give a necessary and sufficient condition for the graph Gn to be factored into spanning trees
The complete mitochondrial genome sequence and annotation of Tylopilus plumbeoviolaceoides T.H. Li, B. Song & Y.H. Shen, 2002 (Boletaceae, Boletoideae)
No full textTylopilus plumbeoviolaceoides T.H. Li, B. Song & Y.H. Shen, 2002 is a species of basidiomycete in the family Boletaceae and is mainly found in Yunnan and Guangdong provinces in China. In this study, the mitochondrial genome of T. plumbeoviolaceoides was reported for the first time. The total length of the mitochondrial genome of T. plumbeoviolaceoides was 37,242 bp, with GC content of 23.0%. The mitochondrial genome of T. plumbeoviolaceoides contained 14 conserved protein-coding genes, 25 transfer RNA genes, and 2 ribosomal RNA genes. The phylogenetic tree indicated that T. plumbeoviolaceoides was closely related to Xerocomus impolitus and Butyriboletus roseoflavus. The complete mitochondrial genome of T. plumbeoviolaceoides will be useful for future research on basidiomycetes
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