Bibliographies thématiques / Organic groups / Articles de revues

Articles de revues sur le sujet « Organic groups »

Pour voir les autres types de publications sur ce sujet consultez le lien suivant : Organic groups.
Auteur : Grafiati
Publié le 18 mai 2024

Créez une référence correcte selon les styles APA, MLA, Chicago, Harvard et plusieurs autres

Choisissez une source :

Consultez les 50 meilleurs articles de revues pour votre recherche sur le sujet « Organic groups ».

À côté de chaque source dans la liste de références il y a un bouton « Ajouter à la bibliographie ». Cliquez sur ce bouton, et nous générerons automatiquement la référence bibliographique pour la source choisie selon votre style de citation préféré : APA, MLA, Harvard, Vancouver, Chicago, etc.

Vous pouvez aussi télécharger le texte intégral de la publication scolaire au format pdf et consulter son résumé en ligne lorsque ces informations sont inclues dans les métadonnées.

Parcourez les articles de revues sur diverses disciplines et organisez correctement votre bibliographie.

1

Yamamoto, Katsutoshi, Yuki Nohara, Yusuke Domon, Yoko Takahashi, Yasuyuki Sakata, Jacques Plévert et Takashi Tatsumi. « Organic−Inorganic Hybrid Zeolites with Framework Organic Groups ». Chemistry of Materials 17, no 15 (juillet 2005) : 3913–20. http://dx.doi.org/10.1021/cm048367g.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
2

Wan, Ying, Dieqing Zhang, Na Hao et Dongyuan Zhao. « Organic groups functionalised mesoporous silicates ». International Journal of Nanotechnology 4, no 1/2 (2007) : 66. http://dx.doi.org/10.1504/ijnt.2007.012316.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
3

Hodge, P. « Protective groups in organic synthesis ». Polymer 33, no 16 (janvier 1992) : 3542. http://dx.doi.org/10.1016/0032-3861(92)91123-j.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
4

Wilson, A. J. C. « Space groups rare for organic compounds ». Acta Crystallographica Section A Foundations of Crystallography 43, a1 (12 août 1987) : C289. http://dx.doi.org/10.1107/s0108767387077717.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
5

Dral, A. Petra, et Johan E. ten Elshof. « Organic groups influencing microporosity in organosilicas ». Microporous and Mesoporous Materials 267 (septembre 2018) : 267–73. http://dx.doi.org/10.1016/j.micromeso.2018.03.036.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
6

Creyghton, Edward J. « Organic groups cling to the pores ». Nature 393, no 6680 (mai 1998) : 21–22. http://dx.doi.org/10.1038/29886.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
7

Ravikumar, Velayutham, Andrea Fin, Naomi Sakai et Stefan Matile. « Solubilising groups : a conceptual equivalent of protecting groups in organic synthesis ». Supramolecular Chemistry 23, no 1-2 (31 août 2010) : 69–73. http://dx.doi.org/10.1080/10610278.2010.510193.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
8

Surtiningsih, Tini, Fatimah Fatimah, Ni’matuzahroh Ni’matuzahroh, Agus Supriyanto et Tri Nurhariyati. « PELATIHAN PEMBUATAN PUPUK ORGANIK CAIR PADA KELOMPOK TANI DI KABUPATEN PROBOLINGGO ». Jurnal Layanan Masyarakat (Journal of Public Services) 2, no 1 (10 juin 2020) : 21. http://dx.doi.org/10.20473/jlm.v2i1.2018.21-24.

Texte intégral
Résumé :
This community service aims to apply the method of making and liquid organic fertilizer and improving the skills of farmers in making liquid organic fertilizer. In addition to reducing the dependence of farmer groups on inorganic fertilizers and utilizing the results of sugarcane waste, namely molasses and microbes as a formula in the manufacture of liquid organic fertilizer. The method that was carried out was to increase insight into liquid organic fertilizer, and how to make it. The results of the socialization of liquid organic fertilizers showed that the insights of farmer groups increased by an average of 77% through the pretest and post test values during socialization. Based on the evaluation shows that the farmer group has been able to make liquid organic fertilizer independently. The socialization of making liquid organic fertilizer provides additional insight for farmer groups on the use of liquid organic fertilizer for agriculture.AbstrakPengabdian kepada masyarakat ini bertujuan untuk menerapkan cara pembuatan dan pupuk organik cair dan meningkatkan keterampilan petani dalam membuat pupuk organik cair. Selain itu untuk mengurangi ketergantungan kelompok tani terhadap pupuk anorganik dan memanfaatkan hasil limbah tebu yaitu molase dan mikroba sebagai formula dalam pembuatan pupuk organik cair. Metode yang dilakukan adalah peningkatan wawasan mengenai pupuk organik cair, dan cara pembuatannya. Hasil sosialisasi pupuk organik cairmenunjukkan bahwa wawasan kelompok tani meningkat rata-rata sebesar 77% melalui nilai pretest dan post test saat sosialisasi. Berdasarkan evaluasi menunjukkan bahwa kelompok tani telah mampu membuat pupuk organik cair secara mandiri. Sosialisasi pembuatan pupuk organik cair memberikan tambahan wawasan bagi kelompok tani terhadap pemanfaatan pupuk organik cair bagi pertanian.
Styles APA, Harvard, Vancouver, ISO, etc.
9

Jarowicki, Krzysztof, et Philip Kocienski. « Protecting groups ». Contemporary Organic Synthesis 2, no 5 (1995) : 315. http://dx.doi.org/10.1039/co9950200315.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
10

Jarowicki, Krzysztof, et Philip Kocienski. « Protecting groups ». Contemporary Organic Synthesis 3, no 5 (1996) : 397. http://dx.doi.org/10.1039/co9960300397.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
11

Jarowicki, Krzysztof, et Philip Kocienski. « Protecting groups ». Contemporary Organic Synthesis 4, no 6 (1997) : 454. http://dx.doi.org/10.1039/co9970400454.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
12

Wilson, A. J. C. « Space groups rare for organic structures. Erratum ». Acta Crystallographica Section A Foundations of Crystallography 45, no 2 (1 février 1989) : 210. http://dx.doi.org/10.1107/s0108767388014205.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
13

FREEMANT, MICHAEL. « Bulk silica imprinted with organic functional groups ». Chemical & ; Engineering News 78, no 4 (24 janvier 2000) : 16. http://dx.doi.org/10.1021/cen-v078n004.p016.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
14

Orain, David, John Ellard et Mark Bradley. « Protecting Groups in Solid-Phase Organic Synthesis ». Journal of Combinatorial Chemistry 4, no 1 (janvier 2002) : 1–16. http://dx.doi.org/10.1021/cc0001093.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
15

Tsukanov, A. V., A. D. Dubonosov, V. A. Bren et V. I. Minkin. « Organic chemosensors with crown-ether groups (review) ». Chemistry of Heterocyclic Compounds 44, no 8 (août 2008) : 899–923. http://dx.doi.org/10.1007/s10593-008-0132-3.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
16

Abrams, Jonathan. « Interactions between organic nitrates and thiol groups ». American Journal of Medicine 91, no 3 (septembre 1991) : S106—S112. http://dx.doi.org/10.1016/0002-9343(91)90292-6.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
17

Jun, C. H., et J. W. Park. « Immobilization of Organic Functional Groups onto Silica ». Synfacts 2010, no 09 (23 août 2010) : 1077. http://dx.doi.org/10.1055/s-0030-1257987.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
18

Sugiyama, Yusuke, Hirotaka Okamoto et Hideyuki Nakano. « Synthesis of Siloxene Derivatives with Organic Groups ». Chemistry Letters 39, no 9 (5 septembre 2010) : 938–39. http://dx.doi.org/10.1246/cl.2010.938.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
19

Menger, Fredric M. « Groups of Organic Molecules That Operate Collectively ». Angewandte Chemie International Edition in English 30, no 9 (septembre 1991) : 1086–99. http://dx.doi.org/10.1002/anie.199110861.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
20

White, J. D. « Protecting Groups ». Synthesis 1994, no 11 (1994) : 1195–96. http://dx.doi.org/10.1055/s-1994-25671.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
21

Deshpande, Rajesh K., Geoffrey I. N. Waterhouse, Geoffrey B. Jameson et Shane G. Telfer. « Photolabile protecting groups in metal–organic frameworks : preventing interpenetration and masking functional groups ». Chem. Commun. 48, no 10 (2012) : 1574–76. http://dx.doi.org/10.1039/c1cc12884a.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
22

Ravikumar, Velayutham, Andrea Fin, Naomi Sakai et Stefan Matile. « ChemInform Abstract : Solubilizing Groups : A Conceptual Equivalent of Protecting Groups in Organic Synthesis ». ChemInform 42, no 39 (1 septembre 2011) : no. http://dx.doi.org/10.1002/chin.201139260.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
23

Kadish, Dora, Aaron D. Mood, Mohammadamin Tavakoli, Eugene S. Gutman, Pierre Baldi et David L. Van Vranken. « Methyl Cation Affinities of Canonical Organic Functional Groups ». Journal of Organic Chemistry 86, no 5 (17 février 2021) : 3721–29. http://dx.doi.org/10.1021/acs.joc.0c02327.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
24

Heping, Sun, et Wu Yulin. « Chinese Nomenclature of Substituent Groups in Organic Chemistry ». University Chemistry 30, no 2 (2015) : 61–63. http://dx.doi.org/10.3866/pku.dxhx20150261.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
25

Suswadi, Ratih Dwi Kartikasari et Setie Harieni. « Organic Vegetable Sustainability Strategies of Youth Farmer Groups ». IOP Conference Series : Earth and Environmental Science 828, no 1 (1 juillet 2021) : 012010. http://dx.doi.org/10.1088/1755-1315/828/1/012010.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
26

Margelefsky, Eric L., Ryan K. Zeidan et Mark E. Davis. « Cooperative catalysis by silica-supported organic functional groups ». Chemical Society Reviews 37, no 6 (2008) : 1118. http://dx.doi.org/10.1039/b710334b.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
27

Kong, Xueqian, Hexiang Deng, Fangyong Yan, Jihan Kim, Joseph A. Swisher, Berend Smit, Omar M. Yaghi et Jeffrey A. Reimer. « Mapping of Functional Groups in Metal-Organic Frameworks ». Science 341, no 6148 (25 juillet 2013) : 882–85. http://dx.doi.org/10.1126/science.1238339.

Texte intégral
Résumé :
We determined the heterogeneous mesoscale spatial apportionment of functional groups in a series of multivariate metal-organic frameworks (MTV-MOF-5) containing BDC (1,4-benzenedicarboxylate) linkers with different functional groups—B (BDC-NH2), E (BDC-NO2), F [(BDC-(CH3)2], H [BDC-(OC3H5)2], and I [BDC-(OC7H7)2]—using solid-state nuclear magnetic resonance measurements combined with molecular simulations. Our analysis reveals that these methods discern between random (EF), alternating (EI and EHI), and various cluster (BF) forms of functional group apportionments. This combined synthetic, characterization, and computational approach predicts the adsorptive properties of crystalline MTV-MOF systems. This methodology, developed in the context of ordered frameworks, is a first step in resolving the more general problem of spatial disorder in other ordered materials, including mesoporous materials, functionalized polymers, and defect distributions within crystalline solids.
Styles APA, Harvard, Vancouver, ISO, etc.
28

Shimizu, Shunsuke, Masahiro Yoshizawa-Fujita, Yuko Takeoka et Masahiro Rikukawa. « Novel Organic–Inorganic Perovskite Compounds Having Phosphonium Groups ». ACS Omega 4, no 8 (6 août 2019) : 13260–64. http://dx.doi.org/10.1021/acsomega.9b01415.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
29

Plante, Obadiah J., Stephen L. Buchwald et Peter H. Seeberger. « Halobenzyl Ethers as Protecting Groups for Organic Synthesis ». Journal of the American Chemical Society 122, no 29 (juillet 2000) : 7148–49. http://dx.doi.org/10.1021/ja0008665.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
30

Kögel-Knabner, Ingrid, et Wulf Amelung. « Soil organic matter in major pedogenic soil groups ». Geoderma 384 (février 2021) : 114785. http://dx.doi.org/10.1016/j.geoderma.2020.114785.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
31

Barglik-Chory, Christine, et Ulrich Schubert. « Organically substituted titanium alkoxides with unsaturated organic groups ». Journal of Sol-gel Science and Technology 5, no 2 (1995) : 135–42. http://dx.doi.org/10.1007/bf00487729.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
32

Schilling, Waldemar, et Shoubhik Das. « CO2-catalyzed/promoted transformation of organic functional groups ». Tetrahedron Letters 59, no 43 (octobre 2018) : 3821–28. http://dx.doi.org/10.1016/j.tetlet.2018.08.033.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
33

Lennartson, Anders, et Christine J. McKenzie. « Bridging nitrile groups in a metal–organic framework ». Journal of Coordination Chemistry 65, no 23 (25 octobre 2012) : 4194–202. http://dx.doi.org/10.1080/00958972.2012.734610.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
34

Krishnamurti, Ramesh, et Henry G. Kuivila. « Chiral Lewis acids. Haloorganotins bearing chiral organic groups ». Journal of Organic Chemistry 51, no 25 (décembre 1986) : 4947–53. http://dx.doi.org/10.1021/jo00375a036.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
35

Bochet, Christian G., et Aurelien Blanc. « ChemInform Abstract : Photolabile Protecting Groups in Organic Synthesis ». ChemInform 43, no 40 (7 septembre 2012) : no. http://dx.doi.org/10.1002/chin.201240249.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
36

Rousseau, Géraldine, et Bernhard Breit. « Removable Directing Groups in Organic Synthesis and Catalysis ». Angewandte Chemie International Edition 50, no 11 (1 mars 2011) : 2450–94. http://dx.doi.org/10.1002/anie.201006139.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
37

Yang, Jingxia, Michael Puchberger, Renzhe Qian, Christian Maurer et Ulrich Schubert. « Zinc(II) Complexes with Dangling Functional Organic Groups ». European Journal of Inorganic Chemistry 2012, no 27 (16 août 2012) : 4294–300. http://dx.doi.org/10.1002/ejic.201200558.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
38

Bochet, Christian G., et Aurelien Blanc. « ChemInform Abstract : Photolabile Protecting Groups in Organic Synthesis ». ChemInform 42, no 13 (3 mars 2011) : no. http://dx.doi.org/10.1002/chin.201113256.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
39

Asyhari, Asyhari, Budhi Cahyono, Siti Sumiati, Dyana Wijayanti, Naila Najihah et Choiril Anwar. « Empowerment of Organic Fertilizer Farmer Groups in Developing Green House-Based Organic Vegetables ». Engagement : Jurnal Pengabdian Kepada Masyarakat 6, no 1 (30 mai 2022) : 229–42. http://dx.doi.org/10.29062/engagement.v6i1.1052.

Texte intégral
Résumé :
Organic vegetables produced by the women farmers group and organic fertilizers produced by the youth groups are not yet productive. The purpose of this community service activity is to empower the women farmers groups and the youth group in the village of Manggihan, Getasan District, Semarang Regency so that they can improve the quality of organic vegetable and organic fertilizers products. This community service is carried out by using ABCD approach, which is an approach to understanding and internalizing assets, potential, strength, and utilization independently and optimally. The results of this community service activity concluded that the entrepreneurial mindset of organic vegetable and organic fertilizer farmer groups was more creative and innovative in processing Green House-based organic vegetables, skilled in bookkeeping, online marketing, and making Intellectual Property Rights to increase awareness of healthy living, increase profits, business, and welfare of rural communities
Styles APA, Harvard, Vancouver, ISO, etc.
40

Hättasch, Toni, Carsten Schmuck et Jochen Niemeyer. « Triazole groups as biomimetic amide groups in peptides can trigger racemization ». Arkivoc 2021, no 3 (11 mars 2021) : 185–96. http://dx.doi.org/10.24820/ark.5550190.p011.484.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
41

Inggrida, Jedda, Fadli Mulyadi et Septian Purnama. « Rural Social Capital in Organic Farmer Institutions in Rice Organic Farming ». HABITAT 34, no 2 (1 août 2023) : 190–202. http://dx.doi.org/10.21776/ub.habitat.2023.034.2.17.

Texte intégral
Résumé :
Social capital is one of the seven fundamental capitals provided to groups or communities. Social capital is used to facilitate interpersonal interactions within a community or group. But nonetheless, only a small number of particular farmer groups, like the Sekar Putih Farming Group, have adopted organic farming methods to produce organic rice. One of the innovators and leaders in the production of organic rice is the Sekar Putih Farmer Group, who interpret the need for cohesiveness in interpersonal relationships. In theory, farmer groups are created because of the members' shared vision, mission, and goals as well as their shared work, which upholds the group's cohesiveness. 25 farmers were used as respondents with data collection using interview techniques, quantitative descriptive and scoring as data analysis methods. The results obtained are the formation of dynamics in farmer institutions, 37% of members have experienced conflicts but conflicts make the group more developed and conflicts can be controlled through equal empowerment. Social capital owned by the group has a high score, bonding social capital shows the togetherness of farmers in every cultivation process carried out and the distribution of information evenly to all group members. For bridging, it is shown by the number of training and empowerment programs that are often held and the Sekar Putih Group gets the opportunity to improve hard and soft skills in the cultivation process and information on market opportunities. In linking social capital, there is high trust in the acquisition of information related to fertilizers, pesticides and markets, this is inseparable from the communication that occurs among group members, both individually and in groups, relationships and interactions that are established can provide many positive sides.
Styles APA, Harvard, Vancouver, ISO, etc.
42

Sowmya, P. T., K. M. Lokanatha Rai, Anitha Sudhir et Sumana Y. Kotian. « Chloramine-T in Organic Synthesis and Analysis of Organic Functional Groups : A Review ». Australian Journal of Chemistry 74, no 10 (2021) : 689. http://dx.doi.org/10.1071/ch21089.

Texte intégral
Résumé :
The diverse nature of Chloramine-T, the sodium salt of N-chloro-p-toluenesulfonamide, abbreviated as CAT, acts as a source of halonium cation and nitrogen anion, and acts as both base and nucleophile. It reacts with broad range of functional groups and brings divergent molecular transformations to synthetic chemistry. CAT has also gained much recognition as a mild oxidant for several organic moieties and has been used as a versatile reagent for the estimation of various functional groups in analytical chemistry. This review relays the synthetic and analytic utility of CAT from different literature sources. As aspects of the synthetic utility of CAT have not previously been reviewed, this article gives a comprehensive profile of the CAT reagent for further research development.
Styles APA, Harvard, Vancouver, ISO, etc.
43

Ding, Xiaofan, Songtao Xiao, Ting Wang, Zucao Zeng, Xudong Zhao et Qingyuan Yang. « Stability of metal-organic frameworks towards β-ray irradiation : Role of organic groups ». Microporous and Mesoporous Materials 354 (avril 2023) : 112533. http://dx.doi.org/10.1016/j.micromeso.2023.112533.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
44

Drugova, Tatiana, Kynda R. Curtis et Sherzod B. Akhundjanov. « Organic wheat products and consumer choice : a market segmentation analysis ». British Food Journal 122, no 7 (24 avril 2020) : 2341–58. http://dx.doi.org/10.1108/bfj-08-2019-0626.

Texte intégral
Résumé :
PurposeThis paper examines determinants of consumer interest in organic versions of wheat products by analyzing differences in selected factors among groups of consumers, distinguished by their likelihood of purchasing organic wheat products. The analysis is performed for bread and cookies to examine whether the findings are different for virtue and vice food categories.Design/methodology/approachA consumer survey was conducted across the western United States in 2017. Latent class modeling is used to identify groups of “very likely,” “likely” and “unlikely” consumers of organic wheat products, based on preferences for organic wheat products and attitudes toward organics in general.FindingsConsumer preferences and willingness to pay (WTP) for organic foods depend on product type. Additionally, significant differences are found across consumer groups—regardless of product type—in the importance they place on labels and product characteristics, WTP, reasons for (not) purchasing organic products and consumption limitations.Research limitations/implicationsThe group of organic consumers may be underrepresented in the sample. In addition, since actual behavior was not observed—respondents provided only stated preferences or responses to hypothetical questions—the results should be interpreted carefully.Originality/valueFew studies have examined preferences for organic wheat products across consumer groups. This study is also the first to examine the connection between wheat/gluten intolerance/avoidance and preference for organic versions of wheat products. Finally, this study adds to the limited literature on consumer preferences for organic virtue and vice food products.
Styles APA, Harvard, Vancouver, ISO, etc.
45

Zulvera, Zulvera, Endry Martius, Nuraini Budi Astuti, Yulinda Yulinda, Ifdal Ifdal et Elva Rahmi. « Sustainability of Organic Certification in Organic Farming Groups in Padang Pariaman Regency, West Sumatra, Indonesia ». International Journal of Progressive Sciences and Technologies 41, no 2 (30 novembre 2023) : 697. http://dx.doi.org/10.52155/ijpsat.v41.2.5802.

Texte intégral
Résumé :
This research aims to describe the sustainability of organic certification by organic farmers in Padang Pariaman Regency. A qualitative approach was employed in this research, located in Pariaman Regency, West Sumatra Province from July to October 2023. The research respondents were the group administrators from 8 farmer groups who had received an organic certificate from the West Sumatra Organic Certification Institute in the period of 2015 to 2022. The key informants were agricultural extension workers, administrators of the West Sumatra Organic Certification Institute, Padang Pariaman Regency Agriculture Service staff, and members of the West Sumatra Organic Task Force. The data collected consists of primary data and secondary data. Data were descriptively and qualitatively analyzed in percentages. The results of the research show that there are three categories of farmer group behavior in responding to organic certification: (a) Certification for a period then stopping, (b) certification, extending and stopping, (c) certification, extending and continuing the certification. One organic certification period last for three years, the farmer group has to reapply the administration to extend the certificate. The number of farmer groups that continue to extend certification is also lower than the farmer groups that do not continue certification, around 30%. The research results show that the number of farmer groups that have received organic certification in Padang Pariaman Regency tends to decrease. This decrease in number was also accompanied by a decrease in the number of farmers implementing organic farming in farmer groups that extended their certification for the second period. Several factors identified that caused the low sustainability of organic certification in organic farmer groups were lack of assistance from extension workers, lack of government support, and the complexity in the implementation of organic farming and product markets organic farming and the process certification documents.
Styles APA, Harvard, Vancouver, ISO, etc.
46

Raatikainen, T., P. Vaattovaara, P. Tiitta, P. Miettinen, J. Rautiainen, M. Ehn, M. Kulmala, A. Laaksonen et D. R. Worsnop. « Physicochemical properties and origin of organic groups detected in boreal forest using an aerosol mass spectrometer ». Atmospheric Chemistry and Physics Discussions 9, no 5 (19 octobre 2009) : 21847–89. http://dx.doi.org/10.5194/acpd-9-21847-2009.

Texte intégral
Résumé :
Abstract. An Aerodyne quadrupole aerosol mass spectrometer (Q-AMS) was deployed in Hyytiälä, a forested rural measurement site in southern Finland, during a 2-week measurement campaign in spring 2005. Q-AMS measures mass concentrations of non-refractory species including sulphate, nitrate, ammonium and organics from submicron particles. A positive matrix factorization method was used in identifying two oxygenated organic aerosol (OOA) groups from the measured total organic mass. The properties of these groups were estimated from their diurnal concentration cycles and correlations with additional data such as air mass history, particle number size distributions, hygroscopic and ethanol growth factors and particle volatility. It was found that the aged and highly oxidized background organic aerosol (OOA1) species have a wide range of hygroscopic growth factors and volatilization temperatures, but on the average OOA1 is the less volatile and hygroscopic organic group. It seems that hygroscopic properties and volatilities of the OOA1 species are correlated so that the less volatile species have higher hygroscopic growth factors. The other less oxidized organic aerosol group (OOA2) is more volatile and non-hygroscopic. Trajectory analysis showed that OOA1 and the inorganic species are mainly long-range transported anthropogenic pollutions. On the other hand, OOA2 species and its precursor gases have short atmospheric life times, so they are from local sources. Current results are in good agreement with previous studies, but additional data especially from other seasons is required to verify the generality of the conclusions.
Styles APA, Harvard, Vancouver, ISO, etc.
47

Raatikainen, T., P. Vaattovaara, P. Tiitta, P. Miettinen, J. Rautiainen, M. Ehn, M. Kulmala, A. Laaksonen et D. R. Worsnop. « Physicochemical properties and origin of organic groups detected in boreal forest using an aerosol mass spectrometer ». Atmospheric Chemistry and Physics 10, no 4 (23 février 2010) : 2063–77. http://dx.doi.org/10.5194/acp-10-2063-2010.

Texte intégral
Résumé :
Abstract. An Aerodyne quadrupole aerosol mass spectrometer (Q-AMS) was deployed in Hyytiälä, a forested rural measurement site in southern Finland, during a 2-week measurement campaign in spring 2005. Q-AMS measures mass concentrations of non-refractory species including sulphate, nitrate, ammonium and organics from submicron particles. A positive matrix factorization method was used in identifying two oxygenated organic aerosol (OOA) groups from the measured total organic mass. The properties of these groups were estimated from their diurnal concentration cycles and correlations with additional data such as air mass history, particle number size distributions, hygroscopic and ethanol growth factors and particle volatility. It was found that the aged and highly oxidized background organic aerosol (OOA1 or LV-OOA) species have a wide range of hygroscopic growth factors and volatilization temperatures, but on the average OOA1 is the less volatile and more hygroscopic organic group. Hygroscopic properties and volatilities of the OOA1 species are correlated so that the less volatile species have higher hygroscopic growth factors. The other, less oxidized organic aerosol group (OOA2 or SV-OOA) is more volatile and non-hygroscopic. Trajectory analysis showed that OOA1 and the inorganic species are mainly long-range transported anthropogenic pollutions. OOA2 species and its precursor gases have short atmospheric life times, so they are from local sources. These results span the range of previous observations of oxygen content, volatility and hygroscopic growth factor, simultaneously coupling all three measurements for the first time.
Styles APA, Harvard, Vancouver, ISO, etc.
48

Liu, S., D. A. Day, J. E. Shields et L. M. Russell. « Ozone-driven photochemical formation of carboxylic acid groups from alkane groups ». Atmospheric Chemistry and Physics Discussions 11, no 3 (2 mars 2011) : 7189–233. http://dx.doi.org/10.5194/acpd-11-7189-2011.

Texte intégral
Résumé :
Abstract. Carboxylic acids are ubiquitous in atmospheric particles, and they play an important role in the physical and chemical properties of aerosol particles. During measurements in coastal California in the summer of 2009, carboxylic acid functional groups were highly associated with trajectories from an industrial region with high organic mass (OM), likely from fossil fuel combustion emissions. The concentration of carboxylic acid groups peaked during daytime, suggesting a photochemical secondary formation mechanism. This daytime increase in concentration was tightly correlated with O3 mixing ratio, indicating O3 was the likely driver in acid formation. Based on the diurnal cycles of carboxylic acid and alkane groups, the covariation of carboxylic acid groups with O3, and the composition of the Combustion factor resulted from the factor analyses, gas-phase alkane oxidation by OH radicals to form dihyfrofuran followed by further oxidation of dihydrofuran by O3 is the likely acid formation mechanism. Using the multi-day average of the daytime increase of carboxylic acid group concentrations and m/z 44-based Aged Combustion factor, we estimated the lower-bound contributions of secondary organic aerosol (SOA) formed in 12-h daytime of processing in a single day to be 30% of the carboxylic acid groups and 25–45% of the Combustion factor concentration. These unique ambient observations of photochemically-driven acid formation suggest that gas-phase alkanes might be important sources of SOA formation in this coastal region.
Styles APA, Harvard, Vancouver, ISO, etc.
49

Anisa, Friztina, Muhammad Habib Alfarizqi, Doni Agung Cahyono, Eliza Febriyani, Novia Dwi Rahmasari et Upik Milenia Jamin. « Capacity building of farmer groups in Mendak Hamlet, Magelang Regency ». Community Empowerment 7, no 1 (3 mars 2022) : 144–52. http://dx.doi.org/10.31603/ce.4288.

Texte intégral
Résumé :
This integrated community service program (PPMT) was carried out in Mendak Hamlet, Banyuwangi Village, Bandongan District, Magelang Regency, Central Java in the form of developing and marketing organic local rice and utilizing yard land. The purpose of the program is to increase public awareness of organic local rice processing and make mothers aware of the use of home gardens to meet the healthy food needs. The implementation of this program is in the form of socialization, training for seeding vegetable seeds, practicing vegetable planting and catfish care, assistancing in making organic fertilizers and making cakes with local ingredients, and branding on organic rice (logos and packaging). The result of the training is that members of KWT Putri Sejahtera know how to seed and plant vegetables properly. Furthermore, through mentoring, farmer group members understand better how to make organic fertilizers and good cake processing. Another result of this program is that members of farmer groups become more aware of the importance of organic rice processing and have used the land in their home gardens to grow healthy vegetables.
Styles APA, Harvard, Vancouver, ISO, etc.
50

Nemoto, Hisao, Masaki Kamiya, Yuki Minami, Takaaki Araki et Tomoyuki Kawamura. « Synthesis of Branched Heptaglycerol Bearing Eight Hydroxyl Groups with Four Cyclic Protecting Groups ». Synlett 2007, no 13 (12 juillet 2007) : 2091–95. http://dx.doi.org/10.1055/s-2007-984890.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
Vous pouvez également être intéressé par les bibliographies sur le sujet « Organic groups » pour d’autres types de sources :
Thèses Livres
Nous offrons des réductions sur tous les plans premium pour les auteurs dont les œuvres sont incluses dans des sélections littéraires thématiques. Contactez-nous pour obtenir un code promo unique!

Vers la bibliographie