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Bibliographies thématiques / CHIM/06

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Littérature scientifique sur le sujet « CHIM/06 »

Auteur : Grafiati

Publié le 10 mars 2023

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Articles de revues sur le sujet "CHIM/06"

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Kuttippurath, J., S. Godin-Beekmann, F. Lefèvre et F. Goutail. « Spatial, temporal, and vertical variability of polar stratospheric ozone loss in the Arctic winters 2004/05–2009/10 ». Atmospheric Chemistry and Physics Discussions 10, n^o 6 (15 juin 2010) : 14675–711. http://dx.doi.org/10.5194/acpd-10-14675-2010.

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Abstract. The stratospheric ozone loss during the Arctic winters 2004/05–2009/10 is investigated by using high resolution simulations from the chemical transport model Mimosa-Chim and observations from Microwave Limb Sounder (MLS) on Aura by the passive tracer technique. The winter 2004/05 was the coldest of the series with strongest chlorine activation. The ozone loss diagnosed from both model and measurements inside the polar vortex at 475 K ranges from ~1–0.7 ppmv in the warm winter 2005/06 to 1.7 ppmv in the cold winter 2004/05. Halogenated (chlorine and bromine) catalytic cycles contribute to 75–90% of the accumulated ozone loss at this level. At 675 K the lowest loss of ~0.4 ppmv is computed in 2008/09 from both simulations and observations and, the highest loss is estimated in 2006/07 by the model (1.3 ppmv) and in 2004/05 by MLS (1.5 ppmv). Most of the ozone loss (60–75%) at this level results from cycles catalysed by nitrogen oxides (NO and NO2) rather than halogens. At both 475 and 675 K levels the simulated ozone evolution inside the polar vortex is in reasonably good agreement with the observations. The ozone total column loss deduced from the model calculations at the MLS sampling locations inside the vortex ranges between 40 DU in 2005/06 and 94 DU in 2004/05, while that derived from observations ranges between 37 DU and 111 DU in the same winters. These estimates from both Mimosa-Chim and MLS are in general good agreement with those from the ground-based UV-VIS (ultra violet–visible) ozone loss analyses for the respective winters.

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Parkash, Vivak, Helen Ashwin, Jovana Sadlova, Barbora Vojtkova, Georgina Jones, Nina Martin, Elizabeth Greensted et al. « A clinical study to optimise a sand fly biting protocol for use in a controlled human infection model of cutaneous leishmaniasis (the FLYBITE study) ». Wellcome Open Research 6 (30 juin 2021) : 168. http://dx.doi.org/10.12688/wellcomeopenres.16870.1.

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Background: Leishmaniasis is a globally important yet neglected parasitic disease transmitted by phlebotomine sand flies. With new candidate vaccines in or near the clinic, a controlled human challenge model (CHIM) using natural sand fly challenge would provide a method for early evaluation of prophylactic efficacy. Methods: We evaluated the biting frequency and adverse effects resulting from exposure of human volunteers to bites of either Phlebotomus papatasi or P. duboscqi, two natural vectors of Leishmania major. 12 healthy participants were recruited (mean age 40.2 ± 11.8 years) with no history of significant travel to regions where L. major-transmitting sand flies are prevalent. Participants were assigned to either vector by 1:1 allocation and exposed to five female sand flies for 30 minutes in a custom biting chamber. Bite frequency was recorded to confirm a bloodmeal was taken. Participant responses and safety outcomes were monitored using a visual analogue scale (VAS), clinical examination, and blood biochemistry. Focus groups were subsequently conducted to explore participant acceptability. Results: All participants had at least one successful sand fly bite with none reporting any serious adverse events, with median VAS scores of 0-1/10 out to day 21 post-sand fly bite. Corresponding assessment of sand flies confirmed that for each participant at least 1/5 sand flies had successfully taken a bloodmeal (overall mean 3.67±1.03 bites per participant). There was no significant difference between P. papatasi and P. duboscqi in the number of bites resulting from 5 sand flies applied to human participants (3.3±0.81 vs 3.00±1.27 bites per participant; p=0.56). In the two focus groups (n=5 per group), themes relating to positive participant-reported experiences of being bitten and the overall study, were identified. Conclusions: These results validate a protocol for achieving successful sand fly bites in humans that is safe, well-tolerated and acceptable for participants. Clinicaltrials.gov registration: NCT03999970 (27/06/2019)

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Đông, Đỗ Trung, Nguyễn Hoàng Khánh Linh, Nguyễn Quang Tân, Lê Nguyễn Thới Trung et Phạm Gia Tùng Tùng. « ĐÁNH GIÁ HIỆN TRẠNG VÀ TIỀM NĂNG CHO PHÁT TRIỂN DU LỊCH NGẮM CHIM TẠI VƯỜN QUỐC GIA BẠCH MÃ ». Hue University Journal of Science : Agriculture and Rural Development 130, n^o 3D (5 novembre 2021). http://dx.doi.org/10.26459/hueunijard.v130i3d.6193.

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Ngắm chim là một loại hình du lịch sinh thái thiên nhiên đang được nhiều quốc gia áp dụng nhờ các lợi ích về kinh tế, xã hội và môi trường. Nghiên cứu này đánh giá tiềm năng đa dạng sinh học (ĐDSH) về tài nguyên chim làm cơ sở cho phát triển loại hình du lịch mới nổi này tại Vườn Quốc gia (VQG) Bạch Mã. Dữ liệu được thu thập từ các nguồn thứ cấp và một chuyến khảo sát điền dã thực tế vào năm 2019. Kết quả cho thấy khu hệ chim ở VQG Bạch Mã có sự ĐDSH tương đối cao với 366 loài, thuộc 63 họ và 16 bộ. Trong đó, có 8 loài đặc hữu thuộc 4 họ, 3 bộ và 16 loài quý hiếm trong sách đỏ Việt Nam. Mười bảy loài chim quý hiếm thuộc danh lục động, thực vật nguy cấp của Nghị định 06/2019/NĐ-CP, trong đó 7 loài thuộc phụ lục IB và 11 loài thuộc phụ lục IIB đã được tìm thấy tại địa bàn nghiên cứu. Tính ĐDSH cao cùng với lợi thế về vị trí địa lý và nguồn nhân lực sẽ là những cơ sở quan trọng cho phát triển du lịch ngắm chim. Do đó, nghiên cứu đã đề xuất một số chiến lược mang hàm ý chính sách để phát triển loại hình du lịch này trong tương lai.

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Thèses sur le sujet "CHIM/06"

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Lena, Stefano <1972&gt. « Nuovi materiali da nucleosidi modificati ». Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2007. http://amsdottorato.unibo.it/67/1/tesi.pdf.

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Lena, Stefano <1972&gt. « Nuovi materiali da nucleosidi modificati ». Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2007. http://amsdottorato.unibo.it/67/.

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Tommasi, Simona <1980&gt. « Catalizzatori altamente versatili per reazioni regio e stereoselettive in fase omogenea ed eterogenea ». Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2007. http://amsdottorato.unibo.it/297/1/Tesi_Simona_Tommasi.pdf.

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Tommasi, Simona <1980&gt. « Catalizzatori altamente versatili per reazioni regio e stereoselettive in fase omogenea ed eterogenea ». Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2007. http://amsdottorato.unibo.it/297/.

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Minzoni, Mirko <1975&gt. « Stereomutazioni in sistemi arilici orto sostituiti ». Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2007. http://amsdottorato.unibo.it/301/1/MIRKO_MINZONI_TESI.pdf.

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Minzoni, Mirko <1975&gt. « Stereomutazioni in sistemi arilici orto sostituiti ». Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2007. http://amsdottorato.unibo.it/301/.

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Savorani, Francesco <1973&gt. « A case study development of chemical indexes, originated from the application of chemometric methods to the Nuclear Magnetic Resonance (NMR), in the assesment of the quality and of the geographical origin of vegetable products ». Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2007. http://amsdottorato.unibo.it/435/1/PhD_Thesis_Francesco_Savorani_XIXciclo_Scienze_Degli_Alimenti.pdf.

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Savorani, Francesco <1973&gt. « A case study development of chemical indexes, originated from the application of chemometric methods to the Nuclear Magnetic Resonance (NMR), in the assesment of the quality and of the geographical origin of vegetable products ». Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2007. http://amsdottorato.unibo.it/435/.

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Fiorelli, Claudio <1977&gt. « Asymmetric synthesis of 1,n diamines ». Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2007. http://amsdottorato.unibo.it/465/1/Tesi_Claudio_Fiorelli_Dott._in_Scienze_chimiche_Chim06_XIX_c.pdf.

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Fiorelli, Claudio <1977&gt. « Asymmetric synthesis of 1,n diamines ». Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2007. http://amsdottorato.unibo.it/465/.

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