186,957 research outputs found
Marmosops (Sciophanes) magdalenae Diaz-Nieto and Voss 2016
No full text<i>Marmosops</i> (<i>Sciophanes</i>) <i>magdalenae</i> Díaz-Nieto and Voss, 2016 <p>TYPE MATERIAL AND TYPE LOCALITY: ICN 19924, the holotype by original designation, consists of the skin and skull of an adult female collected at the Reserva Biológica Cachalú (6.12° N, 73.13° W; 1940 m), Santander department, Colombia.</p> <p>SYNONYMS: None.</p> <p> DISTRIBUTION: <i>Marmosops magdalenae</i> is known from lowland and montane forests (from ca. 100 to 1900 m) in the valley of the Río Magdalena and in the Cordillera Oriental (eastern Andes) of Colombia (Díaz-Nieto and Voss, 2016: fig. 28).</p> <p> REMARKS: For illustrations, description, measurement data, and morphological comparisons with closely related congeners, see Díaz-Nieto and Voss (2016), who assigned <i>Marmosops magdalenae</i> to the Bishopi Group based on phylogenetic analyses of DNA sequence data previously reported by Díaz-Nieto et al. (2016b).</p>Published as part of <i>Voss, Robert S., 2022, An Annotated Checklist Of Recent Opossums (Mammalia: Didelphidae), pp. 1-77 in Bulletin of the American Museum of Natural History 2022 (455)</i> on page 51, DOI: 10.1206/0003-0090.455.1.1, <a href="http://zenodo.org/record/7161371">http://zenodo.org/record/7161371</a>
Abstract shapes of RNA
No full textGiegerich R, Voss B, Rehmsmeier M. Abstract shapes of RNA. Nucleic Acids Research. 2004;32(16):4843-4851.The function of a non-protein-coding RNA is often determined by its structure. Since experimental determination of RNA structure is time-consuming and expensive, its computational prediction is of great interest, and efficient solutions based on thermodynamic parameters are known. Frequently, however, the predicted minimum free energy structures are not the native ones, leading to the necessity of generating suboptimal solutions. While this can be accomplished by a number of programs, the user is often confronted with large outputs of similar structures, although he or she is interested in structures with more fundamental differences, or, in other words, with different abstract shapes. Here, we formalize the concept of abstract shapes and introduce their efficient computation. Each shape of an RNA molecule comprises a class of similar structures and has a representative structure of minimal free energy within the class. Shape analysis is implemented in the program RNAshapes. We applied RNAshapes to the prediction of optimal and suboptimal abstract shapes of several RNAs. For a given energy range, the number of shapes is considerably smaller than the number of structures, and in all cases, the native structures were among the top shape representatives. This demonstrates that the researcher can quickly focus on the structures of interest, without processing up to thousands of near-optimal solutions. We complement this study with a large-scale analysis of the growth behaviour of structure and shape spaces. RNAshapes is available for download and as an online version on the Bielefeld Bioinformatics Server
X-ray emissions from progenitors of type Ia Supernovae
No full textContains fulltext :
115725.pdf (Publisher’s version ) (Open Access)Radboud Universiteit Nijmegen, 15 november 2013Promotores : Nelemans, G.A., Dominik, C. Co-promotor : Voss, R.107 p
Synorchestes grisescens Voss
No full textSynorchestes grisescens Voss (Figs. 5 –8, 19–20, 25– 26) Synorchestes grisescens Voss, 1958: 103 (habitus illustration; China); Morimoto & Miyakawa, 1996: 76 (habitus photo and figures of ventral body, head and rostrum, hind leg and its femoral apodeme, antenna of male; Taiwan); Kojima & Morimoto, 1996: 116 (figures of male tergite, metendosternite, spermatheca and spiculum ventrale). Description See Voss (1958) and Morimoto & Miyalawa (1996) for description except genitalia (Figs. 5 –8, 9–12, 19–20, 25– 26): aedeagus with short setae on anterior margin (as in S. indicus); spiculum gastrale longer than aedeagal body; bladal part of female sternite 8 longer than apodeme; spermatheca with ramus not developed. This species is very similar to S. indicus except for the characters provided in the key. Specimens examined. 1 male, Holotype (preserved in the Zoologisches Forschungsmuseum Alexander Koenig, Bonn); 1 female, Shi Nan Shanm near Liu Kui, S-Taiwan, 29.IV. 1986, K. Baba (ELKU); 1 male, Shan Piug (1000 m), nea Liu Kui, S-Taiwan, 29.IV. 1986, K. Baba (ELKU); 1 female, near Liukuei, Kaosiung Hs., Taiwan, 5–9.iv. 1995, H. Kojima (ELKU). Distribution. China (Fukien), Taiwan.Published as part of Ayri, Shaloo, Kojima, Hiroaki & Y, R A M A M U Rt H, 2012, Flea weevils of the genus Synorchestes Voss (Coleoptera, Curculionidae, Curculioninae, Rhamphini), with description of a second species from India, pp. 74-80 in Zootaxa 3568 on page 80, DOI: 10.5281/zenodo.21381
Synorchestes Voss
No full textGenus Synorchestes Voss Synorchestes Voss, 1958: 103 (type species: Synorchestes grisescens Voss, 1958; China: Fukien; Anthonominae: Rhynchaenini); Morimoto & Miyakawa, 1996: 75 (Rhamphini); Kojima & Morimoto, 1996: 110 (key), 115; Alonso- Zarazaga & Lyal, 1999: 82 (Curculioninae: Rhamphini: Rhamphina). The diagnosis of this genus given by Morimoto & Miyakawa (1996) holds for the new species except that the following features should be modified to include the second species: Rostrum shorter than (male) or nearly as long as (female) pronotum, antennae with scape and basal four segments of funicle flattened dorso-ventrally, apical segment of club longer in male than that in female and, mesosternal process nearly as wide as or a little narrower than middle coxa. Remarks. This genus is characterized by the following combination of features: Antennae with club loosely segmented; pygidium (female) (Fig. 28) and propygidium (male) (Fig. 29) broadly exposed; tibiae unarmed at apex, tarsal groove not ascended; hind femora weakly swollen, relatively more slender than those of other genera in this tribe; 7 th tergite with pair of files for stridulation at anterior margin (Fig. 30); bladal part of 8 th sternite bilobed in female, and spermatheca with gland close to duct. Kojima (2011) proposed that Megorchestes was probably related to Synorchestes, but the former differs in having the fore and middle tibiae armed at apex and the prosternum is deeply emarginate and depressed in front of the coxae. Distribution. China, Taiwan, India (new country record).Published as part of Ayri, Shaloo, Kojima, Hiroaki & Y, R A M A M U Rt H, 2012, Flea weevils of the genus Synorchestes Voss (Coleoptera, Curculionidae, Curculioninae, Rhamphini), with description of a second species from India, pp. 74-80 in Zootaxa 3568 on page 75, DOI: 10.5281/zenodo.21381
Synorchestes Voss
No full textKey to species of <i>Synorchestes</i> Voss <p> 1 Antennal club with 3rd segment longer (male) or shorter (female) than basal two segments combined (Fig. 19, 20). Hind tarsus with 1st segment slightly longer than broad (Fig. 25, 26). Spermatheca with ramus not developed (Fig. 12). Bladal part of female sternite 8 longer than apodeme (Fig. 13). Length: 4.5–5.0 mm. China, Taiwan.................. <i>S. grisescens</i> Voss</p> <p> 1’ Antennal club with 3rd segment longer than basal two segments combined in both sexes (Fig. 21, 22). Hind tarsus with 1st segment 1.5x longer than broad (Fig. 23, 24). Spermatheca with ramus developed (Fig. 17). Bladal part of female sternite 8 nearly as long as apodeme (Fig. 18). Length: 4.0– 4.5 mm. India........................................ <i>S. indicus</i> <b>sp. nov.</b></p>Published as part of <i>Ayri, Shaloo, Kojima, Hiroaki & Y, R A M A M U Rt H, 2012, Flea weevils of the genus Synorchestes Voss (Coleoptera, Curculionidae, Curculioninae, Rhamphini), with description of a second species from India, pp. 74-80 in Zootaxa 3568</i> on page 75, DOI: <a href="http://zenodo.org/record/213812">10.5281/zenodo.213812</a>
Trasformazioni delle reti di Voss
No full textNel presente lavoro si ripiglia la determinazione delle reti di Voss di uno spazio lineare fatta da R. Calapso e si determinano le funzioni di Gauss , della rete per mezzo degli integrali della equazione della superficie a curvatura costante dell'.
Detta esplicitazione si raggiunge introducendo una coppia > di normali, e mediante essa è possibile fare vedere, che scambiando fra loro certe funzioni e (che entrano nella determinazione della rete) questa rete si trasforma in un’altra rete di Voss, che è legata alla prima mediante la trasformazione di R. CALAPSO
Virginia Voss, 1952 Freshman
No full textVirginia Voss was a freshman at Jacksonville State Teachers College in 1951-1952.https://digitalcommons.jsu.edu/lib-ac-histimg/6136/thumbnail.jp
Towards discovering novel aspects of nuclear biology in the malaria parasite "Plasmodium falciparum"
No full textThe apicomplexan parasite P. falciparum continues to cause morbidity and mortality imposing a significant health and economic burden on human society. In light of antimalarial drug resistance and the lack of an effective vaccine there is an urgent need to understand the basic biology of Plasmodium parasites in much greater detail. In particular, basic nuclear processes such as those remain surprisingly unsought despite their importance in parasite survival and life cycle progression. Thus, identification and localisation of novel parasite proteins to areas of the nucleus is an important first step towards giving new insights into nuclear architecture and function. The main aim of this thesis was to compile an inventory of the nuclear proteome across the intra-erythrocytic cell cycle using high accuracy mass spectrometry coupled with bioinformatics and in vivo localisation experiments. The dataset was analysed for accuracy and retention of true nuclear proteins revealing a final list of 802 potential nuclear proteins with an estimated precision of 76%. Interestingly, the informational pool of this study was able to identify a large number of novel nuclear components including novel protein domains possibly involved in gene regulation, members of the nuclear pores, the nucleolus and the proteasome (chapter 2). Several transgenic parasite lines used for the experimental validation part of the nuclear core proteome were further investigated in more detail. One of these transgenic cell lines expresses the C-terminally tagged bromo-domain protein PF10_0328 and was investigated by co-immuoprecipitation experiments followed by LC-MS/MS to identify interacting proteins. Bromodomain proteins bind specifically to acetylated lysine residues in histone tails and are important regulators of transcription. Our results suggest that PF10_0328 acts in concert with two additional bromo-domain proteins in regulating transcription in P. falciparum (chapter 3). Further characterisation on the functional level of these three important regulators is currently ongoing in a collaborative effort. Characterisation of bromo-domain proteins could establish new intervention strategies against malaria as the recognition of acetylated histone tails by bromo-domains can be selectively prevented by small molecules. Furthermore, several proteins residing in the nuclear pores and the nucleolus of P. falciparum were used to visualise these structures in relation to chromosome end clusters based on fluorescence microscopy. We show that both structures, involved in nuclear-cytoplasmic trafficking and ribosomal biogenesis, respectively, do not appear to ‘cross-talk’ with silenced chromosome ends at the nuclear periphery of P. falciparum (chapter 4). In conclusion, I believe that my work about several aspects of gene regulation and nuclear architecture increases the understanding of the biology of this medically important pathogen and could have potential to identify new avenues for interventions against malaria
Valine Voss, Student
No full textValine Voss was a student at Jacksonville State College. She was a member of the International House program. (circa 1956)https://digitalcommons.jsu.edu/lib-ac-histimg/10749/thumbnail.jp
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