New minerals tsangpoite Ca5(PO4)2(SiO4) and matyhite Ca9(Ca0.5□0.5)Fe(PO4)7 from the D'Orbigny angrite

Tsangpoite, ideally Ca5(PO4)2(SiO4), the hexagonal polymorph of silicocarnotite, and matyhite, ideally Ca9(Ca0.5□0.5)Fe(PO4)7, the Fe-analogue of Ca-merrillite, were identified from the D'Orbigny angrite meteorite by electron probe microanalysis, electron microscopy and micro-Raman spectroscopy. On the basis of electron diffraction, the symmetry of tsangpoite was shown to be hexagonal, P63/m or P63, with a = 9.489(4) Å, c = 6.991(6) Å, V = 545.1(6) Å3 and Z = 2 for 12 oxygen atoms per formula unit, and that of matyhite was shown to be trigonal, R3c, with a = 10.456 (7) Å, c = 37.408(34) Å, V = 3541.6 (4.8) Å3 and Z = 6 for 28 oxygen atoms per formula unit. On the basis of their constant association with the grain-boundary assemblage: Fe sulfide + ulvöspinel + Al-Ti-bearing hedenbergite + fayalite-kirschsteinite intergrowth, the formation of tsangpoite and matyhite, along with kuratite (the Fe-analogue of rhönite), can be readily rationalised as crystallisation from residue magmas at the final stage of the D'Orbigny meteorite formation. Alternatively, the close petrographic relations between tsangpoite/matyhite and the resorbed Fe sulfide rimmed by fayalite + kirschsteinite symplectite, such as the nucleation of tsangpoite in association with magnetite ± other phases within Fe sulfide and the common outward growth of needle-like tsangpoite or plate-like matyhite from the fayalite-kirschsteinite symplectic rim of Fe sulfide into hedenbergite, infer that these new minerals and the grain-boundary assemblage might represent metasomatic products resulting from reactions between an intruding metasomatic agent and the porous olivine-plagioclase plate + fayalite-kirschsteinite overgrowth + augite + Fe sulfide aggregates. Still further thermochemical and kinetics evidence is required to clarify the exact formation mechanisms/conditions of the euhedral tsangpoite, matyhite and kuratite at the grain boundary of the D'Orbigny angrite.Fil: Hwang, Shyh Lung. National Dong Hwa University; República de ChinaFil: Shen, Pouyan. National Sun Yat-sen Universit; República de ChinaFil: Chu, Hao-Tsu. Central Geological Survey; República de ChinaFil: Yui, Tzen-Fu. Institute of Earth Sciences; República de ChinaFil: Varela, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; ArgentinaFil: Iizuka, Yoshiyuki. Institute of Earth Sciences; República de Chin

Vasculature-driven stem cell population coordinates tissue scaling in dynamic organs

Stem cell (SC) proliferation and differentiation organize tissue homeostasis. However, how SCs regulate coordinate tissue scaling in dynamic organs remain unknown. Here, we delineate SC regulations in dynamic skin. We found that interfollicular epidermal SCs (IFESCs) shape basal epidermal proliferating clusters (EPCs) in expanding abdominal epidermis of pregnant mice and proliferating plantar epidermis. EPCs consist of IFESC-derived Tbx3⁺–basal cells (Tbx3⁺-BCs) and their neighboring cells where Adam8–extracellular signal–regulated kinase signaling is activated. Clonal lineage tracing revealed that Tbx3⁺-BC clones emerge in the abdominal epidermis during pregnancy, followed by differentiation after parturition. In the plantar epidermis, Tbx3⁺-BCs are sustained as long-lived SCs to maintain EPCs invariably. We showed that Tbx3⁺-BCs are vasculature-dependent IFESCs and identified mechanical stretch as an external cue for the vasculature-driven EPC formation. Our results uncover vasculature-mediated IFESC regulations, which explain how the epidermis adjusts its size in orchestration with dermal constituents in dynamic skin

Relationship between family support and nutrient intake status in type 2 diabetes mellitus patients

【目的】通院中の2型糖尿病外来患者を対象に、情動的サポート、行動的サポート、また情報的サポートに着目し、家族による支援の有無別に栄養素等摂取状況の検討を行った。【方法】2016年3月～8月、新潟市Ｂ病院の2型糖尿病外来患者42名（年齢中央値68.0歳、男性比率66.7％）を対象に実施した、自記式質問紙調査及び食物摂取頻度調査データを用いた（有効回答率70.0％）。質問紙調査より得た、家族による支援の有無によって対象者を2群に区分した。食物摂取頻度調査より得たデータを用いて、2群のエネルギー及び栄養素等摂取量、食品群別摂取量（密度法によって調整）についてMann-Whitney のU 検定を用いて検討した。【結果】「食事療法を守っていることをほめる」の問いでは、支援あり7名（16.7％）、支援なし35名（83.3％）であった。2群の1000kcal あたりの栄養素等・食品群別摂取量で差がみられた項目はなかった。「同じ時間に食事をする」の問いでは、支援あり32名（76.2％）、支援なし10名（23.8％）であった。支援ありの者で相対的に、たんぱく質（p＝0.045）、豆類（p＝0.022）摂取量が多く、菓子類（p＝0.020）、油脂類（p＝0.039）の摂取量が少なかった。「家族の糖尿病の知識の有無」では、知識ありの者で油脂類のみ摂取量が相対的に多かった（p＝0.013）。また、「家族の食事療法の知識の有無」では、知識ありの者で嗜好飲料のみ摂取量が相対的に多かった（p＝0.028）。【結論】2 型糖尿病外来患者が受ける家族による支援として、「ほめる」という情動的サポートや疾患や食事療法の知識という情報的サポートに比べ、「同じ時間に食事をする」という家族の存在、家族の行動的サポートが栄養素等摂取状況に関連することが示唆された。Objective: To investigate the relationship between family support, specifically emotional, practical, and informational support, and nutrient intake status in type 2 diabetes mellitus (DM) outpatients. Methods: We distributed a self-report questionnaire and food frequency questionnaire to 42 outpatients with type 2 DM (median age: 68.0 years; men: 66.7%) from a community hospital-based registry in Niigata City between March to August 2016. From the self-report questionnaire, the patients were divided into two groups based on whether they received family support or not. Energy and nutrient intake and intake by food groups were compared using Mann-Whitney U test between the two groups.Results: Regarding the item “Praise for complying with medical nutritional therapy,” 7 patients (16.7%) were praised and 35 patients (83.3%) were not. There was no significant difference in nutrient intake or intake by food group between these two groups. For the item “family eating at the same time,” 32 patients (76.2%) responded that they had family meals together versus 10 patients (23.8%) who did not. Regarding energy and nutrient intake and intake by food group, families who ate together had meals with significantly higher protein (p= 0.045) and beans (p= 0.022) content with less confectionary (p= 0.010) and oil and fat (p= 0.039) content compared with families who did not eat together. Fat and oil intake was significantly higher among families with knowledge of DM and intake of beverage was higher among families with knowledge of dietary treatment than among families without such knowledge. Conclusion: For family support, our findings suggested that practical support such as eating at same time was more strongly related to nutrient intake among type 2 DM patients in comparison with emotional support such as praising patients

Solar light photocatalytic CO2 reduction: general considerations and selected bench-mark photocatalysts

[EN] The reduction of carbon dioxide to useful chemicals has received a great deal of attention as an alternative to the depletion of fossil resources without altering the atmospheric CO2 balance. As the chemical reduction of CO2 is energetically uphill due to its remarkable thermodynamic stability, this process requires a significant transfer of energy. Achievements in the fields of photocatalysis during the last decade sparked increased interest in the possibility of using sunlight to reduce CO2. In this review we discuss some general features associated with the photocatalytic reduction of CO2 for the production of solar fuels, with considerations to be taken into account of the photocatalyst design, of the limitations arising from the lack of visible light response of titania, of the use of co-catalysts to overcome this shortcoming, together with several strategies that have been applied to enhance the photocatalytic efficiency of CO2 reduction. The aim is not to provide an exhaustive review of the area, but to present general aspects to be considered, and then to outline which are currently the most efficient photocatalytic systems.Financial support by the Marie Curie project PIEF-GA-2011-298740 and Generalitat Valenciana (Prometeo 20121013) is gratefully acknowledged. J.A.M.-A. acknowledges the assistance of the CSIC for their award of a Postdoctoral JAE-Doc contract.Neatu, S.; Maciá Agulló, JA.; García Gómez, H. (2014). Solar light photocatalytic CO2 reduction: general considerations and selected bench-mark photocatalysts. International Journal of Molecular Sciences. 15(4):5246-5262. https://doi.org/10.3390/ijms15045246S5246526215

Synthetic strategies to nanostructured photocatalysts for CO2 reduction to solar fuels and chemicals

Artificial photosynthesis represents one of the great scientific challenges of the 21st century, offering the possibility of clean energy through water photolysis and renewable chemicals through CO2 utilisation as a sustainable feedstock. Catalysis will undoubtedly play a key role in delivering technologies able to meet these goals, mediating solar energy via excited generate charge carriers to selectively activate molecular bonds under ambient conditions. This review describes recent synthetic approaches adopted to engineer nanostructured photocatalytic materials for efficient light harnessing, charge separation and the photoreduction of CO2 to higher hydrocarbons such as methane, methanol and even olefins

Kuratite IMA 2013-109

The information given here is provided by the IMA Commission on New Minerals, Nomenclature and Classification for comparative purposes and as a service to mineralogists working on new species.Fil: Hwang, Shyh-Lung. National Dong Hwa University. Department of Materials Science and Engineering; República de ChinaFil: Shen, Pouyan. National Sun Yat-sen University. Institute of Materials Science and Engineering; República de ChinaFil: Chu, Hao-Tsu. Central Geological Survey; República de ChinaFil: Yui, Tzen-Fu. Academia Sinica. Institute of Earth Sciences; República de ChinaFil: Varela, Maria Eugenia. Consejo Nacional de Investigaciones Cienti­ficas y Tecnicas. Centro Cientifico Tecnologico San Juan. Instituto de Ciencias Astronomicas de la Tierra y del Espacio; ArgentinaFil: Iizuka, Yoshiyuki. Central Geological Survey; República de Chin

Tbx3-dependent amplifying stem cell progeny drives interfollicular epidermal expansion during pregnancy and regeneration

妊娠期に腹部の皮膚が広がる仕組みの一端をマウスで解明. 京都大学プレスリリース. 2017-09-13.The skin surface area varies flexibly in response to body shape changes. Skin homeostasis is maintained by stem cells residing in the basal layer of the interfollicular epidermis. However, how the interfollicular epidermal stem cells response to physiological body shape changes remains elusive. Here, we identify a highly proliferative interfollicular epidermal basal cell population in the rapidly expanding abdominal skin of pregnant mice. These cells express Tbx3 that is necessary for their propagation to drive skin expansion. The Tbx3+ basal cells are generated from Axin2+ interfollicular epidermal stem cells through planar-oriented asymmetric or symmetric cell divisions, and express transit-amplifying cell marker CD71. This biased division of Axin2+ interfollicular epidermal stem cells is induced by Sfrp1 and Igfbp2 proteins secreted from dermal cells. The Tbx3+ basal cells promote wound repair, which is enhanced by Sfrp1 and Igfbp2. This study elucidates the interfollicular epidermal stem cell/progeny organisation during pregnancy and suggests its application in regenerative medicine

Olivinites in the angrite D'Orbigny: Vestiges of pristine reducing conditions during angrite formation

Olivinites, together with olivine megacrysts, are the most magnesian phases found in angrites. Their chemical composition (mg# 90) is out of equilibrium with the groundmass and far away from that of possible precipitates from angrite parent melts. Therefore olivinites, as well as olivine megacrysts, were considered as xenoliths and xenocrysts. We report here a detailed study of five olivinites from the angrite D'Orbigny. Our results indicate that D'Orbigny experienced metasomatic alteration processes, which led to enrichments in FeO and MnO (relative to the original composition), changing the initial Mg-rich composition of the olivines to the one seen now. As this process took place in equilibrium with a chondritic reservoir (e.g., Fe/Mn ratios spreading around primitive values), the primitive (Mg-rich) olivine chemical composition was changed towards a more fayalitic one while preserving a chondritic signature. This chondritic signature was preserved in the Fe/Mn ratio of the olivinites, olivine megacrysts, augite grains in olivinites and groundmass olivine of D'Orbigny. Therefore the fayalite content of about 35 mol.% that characterizes the groundmass olivine of this rock – as well as other angrites-does not correspond to its original composition but may be the result of a late metasomatic process that affected these rocks. If so, olivinites and Mg-rich olivines might not be compositionally exotic phases but are an early constituent phase that retained the pristine more reducing conditions that have been preserved in some angrites, where they form either a small part of the rock (e.g., Asuka 881371 and D'Orbigny) or the majority of it (NWA 8535).Fil: Varela, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; ArgentinaFil: Hwang, S. L.. National Dong Hwa University; República de ChinaFil: Shen, P.. National Sun Yat-sen University; República de ChinaFil: Chu, H. T.. Central Geological Survey; República de ChinaFil: Yui, T. F.. Academia Sinica; República de ChinaFil: Iizuka, Y.. Academia Sinica; República de ChinaFil: Brandstätter, F.. Naturhistorisches Museum; AustriaFil: Abdu, Y. A.. University of Sharjah; Emiratos Arabes Unido