132,703 research outputs found
Comparison of the Reactivities and Selectivities of Group9 [Cp*M-III] Catalysts in C-H Functionalization Reactions
No full textPentamethylcyclopentadienyl (Cp*)-based Group9 metal (Co, Rh, or Ir) catalysts have emerged as powerful tools for C-H functionalization reactions. Whilst a diverse range of organic transformations have been developed by using [Cp*M-III] catalysts, they have often exhibited orthogonal reactivities and varied selectivities that depended on the choice of the central metal atom. An understanding of the physicochemical properties of the metals, as well as of their reaction mechanisms, has led to significant expansion of the synthetic scope of C-H functionalization reactions. This Focus Review summarizes and discusses the comparative catalytic reactivities and selectivities of the [Cp*M-III] catalysts, with an emphasis on metal-dependent pathway-switching by considering the mechanistic rationale ⓒ 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinhei
Proceedings of the 21st IPSAPA/ISPALEM International Scientific Conference
No full textSince 2005 the IPSAPA conference focuses on the successful keyword
"landscape-cultural mosaic." Sometimes it prevailed realism, sometimes
economics, sometimes evolutionary dynamics, sometimes the pursuit of
excellence. This edition confirms the return to the domain of imagination and
fascination of discovery, taking the line of the conferences of 2009 and 2010,
named respectively "The backstage of the landscape-cultural mosaic . Invisible,
Inaccessible, Inexistent" and "Wonderland in the landscape-cultural mosaic.
Idea, Image, Illusion". The fantastic invention was present in part in the 2013
conference entitled "Utopias and dystopias in the landscape-cultural mosaic.
Visions, Values, Vulnerability". The unstructured reality was the subject of the
previous conference (2016) entitled "Erratic of the landscape-cultural mosaic.
Emotion, Energy, Experience
{Joint analysis of Dark Energy Survey Year 3 data and CMB lensing from SPT and Planck. II. Cross-correlation measurements and cosmological constraints}
No full textCross-correlations of galaxy positions and galaxy shears with maps of gravitational lensing of the cosmic microwave background (CMB) are sensitive to the distribution of large-scale structure in the Universe. Such cross-correlations are also expected to be immune to some of the systematic effects that complicate correlation measurements internal to galaxy surveys. We present measurements and modeling of the cross-correlations between galaxy positions and galaxy lensing measured in the first three years of data from the Dark Energy Survey with CMB lensing maps derived from a combination of data from the 2500 deg2 SPT-SZ survey conducted with the South Pole Telescope and full-sky data from the Planck satellite. The CMB lensing maps used in this analysis have been constructed in a way that minimizes biases from the thermal Sunyaev Zel'dovich effect, making them well suited for cross-correlation studies. The total signal-to-noise of the cross-correlation measurements is 23.9 (25.7) when using a choice of angular scales optimized for a linear (nonlinear) galaxy bias model. We use the cross-correlation measurements to obtain constraints on cosmological parameters. For our fiducial galaxy sample, which consist of four bins of magnitude-selected galaxies, we find constraints of omega m 1/4 0.272 thorn 0.032 pffiffiffiffiffiffiffiffiffiffiffiffiffiffi-0.052 and S8 equivalent to sigma 8 omega m=0.3 1/4 0.736 thorn 0.032 -0.028 (omega m 1/40.245 thorn 0.0-0.04426 and S8 1/40.734 thorn 0.035 -0.028 ) when assuming linear (nonlinear) galaxy bias in our modeling. Considering only the cross-correlation of galaxy shear with CMB lensing, we find omega m 1/4 0.270 thorn 0.043 -0.061 and S8 1/4 0.740 thorn 0.034 -0.029 . Our constraints on S8 are consistent with recent cosmic shear measurements, but lower than the values preferred by primary CMB measurements from Planck
Brain Segmentation ? A Case study of Biomedical Cloud Computing for Education and Research
No full textMedical imaging is widely adopted in Hospitals and medical institutes, and new ways to improve existing medical imaging services are regularly exploited. This paper describes the adoption of Cloud Computing is useful for medical education and research, and describes the methodology, results and lesson learned. A working Bioinformatics Cloud platform can demonstrate computation and visualisation of brain imaging. The aim is to study segmentation of brains, which divides the brain into ten major regions. The Cloud platform has these two functions: (i) it can highlight each region for ten different segments; and (ii) it can adjust intensity of segmentation to allow basic study of brain medicine. Two types of benefits are reported as follows. Firstly, all the medical student participants are reported to have 20% improvement in their learning satisfaction. Secondly, 100% of volunteer participants are reported to have positive learning experience
The circadian clocks of mice and men
No full textDennis Chang is a PhD student in the Reppert Lab at UMass Medical School.The molecular dissection of the mammalian circadian clock continues to yield exciting and important discoveries. Here we review the recent progress in the field, highlighting work on the central clock mechanism itself, the photopigments involved in the entrainment of the central clock by light, and the signals that entrain peripheral oscillators
Proceedings of the 19th IPSAPA/ISPALEM - International Scientific Conference. The Turning Point of the Landscape-cultural Mosaic: Renaissance Revelation Resilience
No full textTurning Point is the provocative term geologist and (today) opinion leader Gregg Braden uses to encourage all of us to reflect on the ways that science and culture are traveling. In his work "he is known internationally as a pioneer in building a bridge between science and indigenous skills in view of real solutions for today's world." This is not the first laudator temporis acti (admirer of the past) but his characteristic is to challenge many stereotypes of the contemporary world from the inside, and not just as a confused outside observer as sometimes happens in nostalgic literature. For him the turning point is the obliged moment to bring back the world before it falls into a chaotic structure no longer controllable. Experts of complexity however tell us that progress can only be born in a world that hovers on the brink of chaos. Braden, after living as an expert in the world of complexity, casts doubts on this statement and sets limits beyond which the risk of uncontrollable fall becomes too high. Its wide reflection on resilience shows the need to maintain, while there is still time, a reserve capacity, unexpressed but accessible
Proceedings of the 20th IPSAPA/ISPALEM International Scientific Conference. The Erratic Behavior of the Landscape-cultural Mosaic: Emotion, Energy, Experience
No full textThe 20th IPSAPA conference was held in Reggio Calabria on July 7-8, 2016.
The call for papers was followed by the participants more faithfully than usual,
and the papers cover most of the foreseen items in a balanced way. The call for
papers therefore is also a good outline for the introduction to this book.
Since 2005 IPSAPA conference focuses on the successful keyword "landscapecultural
mosaic". Sometimes it prevailed realism, sometimes economic
sustainability, sometimes the evolutionary dynamics, sometimes the pursuit of
excellence. This time we went back to the domain of the imagination and to the
fascination of discovery, taking the line of the conferences of 2009 and 2010,
called respectively: "The backstage of the landscape-cultural mosaic: Invisible,
Inaccessible, Inexistent" and "The Wonderland in the landscape-cultural mosaic:
Idea, Image, Illusion". The fantastic invention was present in part also in the
2013 conference entitled "Utopias and dystopias in the landscape-cultural
mosaic: Visions, Values, Vulnerability"
Strategic or Struggling? Professionalizing Philanthropy in Nonprofit Arts Organizations
No full textThe purpose of this chapter is to examine how the structure and role of philanthropy have come to shape the professionalization process that is occurring in performing arts organizations (PAOs) in Australia. Using resource dependency theory, interviews, and content from annual reports and websites analyzed qualitatively, we illustrate how philanthropy has shifted from a peripheral position to become of central importance over the last few decades as arts organizations have professionalized in structure and role. New structures and roles have been introduced that illustrate whether PAOs are strategic or struggling in this process. They either use whole-of-organization approaches in order to co-create value through philanthropy or are more piecemeal in their approach, with one person solely responsible for philanthropy. Our findings identified that the structure and role of philanthropy were either (1) strategically determined, enabling a whole-of-organization approach to philanthropy; or (2) precarious, discreet, and prudent but low priority, which saw the organization struggle to contribute philanthropically
Metaphire tengjhihensis Chang, Chuang, Wu & Chen, 2014, sp. nov.
No full textMetaphire tengjhihensis sp. nov. Chang & Chen (Fig. 1) Metaphire sp.: Chang et al. 2008: 959, 964–965, Figs. 1 –4, Tables 1, 3; Chang & Chen 2008: 56–58, Fig. 1 O, Table 1; Chang et al. 2009: 6, Fig. 2 O. [Chang et al. (2009) cited the taxon as ‘an undescribed species’]. Type specimens. Holotype: MZNTU 14 -05901 (mature), collected 6 May 2003 from Tengjhih, Kaohsiung County, Taiwan by C.-H. Chang. Paratypes: Two specimens. MZNTU 14 -07003 (mature), collected 1 April 2004 from Tengjhih, Kaohsiung County by C.-H. Chang; MZNTU 14 -07175 (mature), collected 4 April 2004 from Liouguei, Kaohsiung County by S.-P. Wu. Other material examined. Three mature specimens. MZNTU 14 -05900, collected 5 May 2003 from Tengjhih, Kaohsiung County, Taiwan by C.-H. Chang; MZNTU 14 -05902, collected 6 May 2003 from Tengjhih, Kaohsiung County, Taiwan by C.-H. Chang; MZNTU 14 -06224, collected 30 July 2003 along Route 20, Taoyuan, Kaohsiung County, Taiwan by C.-H. Chang. Distribution. Southward of the Launong River in the southwest of the Central Mountain Range, recorded at elevations above 2,000 m. Etymology. After the type locality Tengjhih, Kaohsiung. DNA barcodes from type specimens. Available for MZNTU 14 -05901, 14 -07175 (Table 1). Diagnosis. Pheretimoids with lengths 90–176 mm, clitellum width 8–9 mm. Copulatory pouches present with a round or oval pad in front of the male pore. Spermathecae four pairs in 6–9 with coiled diverticulum stalks. No genital papillae in the spermathecal pore area. Testes proandric. Prostate gland lobular. Caeca simple. Morphology. External characters. Length (mature) 90–176 mm, clitellum width 8–9 mm, segment number 62–111. Number of annuli per segment three in 5–9, five in 10–13, and three in body segments behind 17. Prostomium epilobous. Setae 84–102 in 7, 96–102 in 20, 17–21 between male pores. First dorsal pore in 12 / 13. Clitellum 14–16, annular, smooth, length 6–8 mm, dorsal pore absent, setae absent. Preserved specimens light brown. Spermathecal pores four pairs in 5 / 6–8 / 9, lateral, distance between the paired pores about 0.4–0.5 body circumference apart ventrally. No genital papillae in the spermathecal pore region. Female pore single, mid-ventral in 14. Male pores paired in 18, latero-ventral, in a C-shaped copulatory pouch, with the opening of the C towards mid-ventral, bordered laterally by a thick skin wall. Male pore area slightly enlarged, extending to the post-setal and pre-setal annuli of 17 and 19, respectively, surrounded by circular folds, with a round or oval pad anterior to the pore and partially covered by the skin wall. Genital papillae absent in the male pore area. Internal characters. Septa 5 / 6–7 / 8 slightly thickened, 8 / 9 membranous, 9 / 10 absent, 10 / 11–13 / 14 greatly thickened. Gizzard in 8. Intestine enlarged from 15. Intestinal caeca paired in 27, simple, extending anteriorly to 23. Oesophageal hearts enlarged in 10–13. Spermathecae four pairs in 6–9, each with an elliptic ampulla about 3–5 mm long, and a short stalk about 1–2 mm. Diverticulum small, with an oval, white seminal chamber, and a short, tightly coiled stalk, reaching the base of ampulla. Meronephridia tufted, attached to the anterior face of septa 5 / 6 and 6 / 7. Ovaries paired in 13, medio-ventral, close to the 12 / 13 septum. Testis sacs paired in 10, oval-shaped, smooth, medio-ventral in front of 10 / 11. Seminal vesicles paired in 11, large, enclosed in thin sacs, each one with a folliculate dorsal lobe. Prostate glands paired in 18, large, lobular, extending to 17 and 19. Remarks. M. tengjhihensis sp. nov. is the sister taxon to M. feijani and was recognized as a cryptic species morphologically similar to M. paiwanna paiwanna by Chang et al. (2008) using DNA barcodes as well as other genes. These authors showed that M. tengjhihensis (Metaphire sp. in the paper) and M. paiwanna paiwanna differ by an average of 16.4% in their COI gene. Compared to M. paiwanna paiwanna, M. tengjhihensis is generally smaller and has more regularly coiled spermathecal diverticulum stalks. In addition, the two species live in different habitats: M. paiwanna paiwanna lives in evergreen broadleaf forests at elevations below 1,600 m, while M. tengjhihensis lives in the colder deciduous broadleaf forests at elevations above 2,000 m.Published as part of Chang, Chih-Han, Chuang, Shu-Chun, Wu, Jia Hsing & Chen, Jiun-Hong, 2014, New species of earthworms belonging to the Metaphire formosae species group (Clitellata: Megascolecidae) in Taiwan, pp. 324-332 in Zootaxa 3774 (4) on pages 325-327, DOI: 10.11646/zootaxa.3774.4.2, http://zenodo.org/record/22598
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