Podcasts about cofs

For many farmers visiting Canada’s Outdoor Farm Show (COFS), the tillage demonstration has become a must-attend event. Independent agronomist and long-time COFS field demonstration host Pat Lynch says farmers see the benefits of tillage and it’s important to keep up to date with the evolution of tillage equipment to understand how it can best fit... Read More

Hey Hey salut tout le monde! Dans ce spécial du #COFS, je suis avec Rock Léonard, Sam Lefebvre et Serge Proulx.  On vous jase de notre périple à Woodstock lors de la tenue du Canada's Outdoor Farm Show! Allez liker la page Facebook des Podcasts Agricoles https://www.facebook.com/PodcastsAgricolesQuebec Pour me rejoindre, écrivez moi à PodcastsAgricoles@gmail.com Abonnez vous également a ma page Patreon, https://www.patreon.com/PodcastsAgricoles Ou encore, téléchargez l'application Patreon sur votre téléphone à poche. Pour écoutez The Backslash Band, créateur de tous les jingles des Podcasts Agricoles, sur Spotify https://open.spotify.com/artist/1uYTEtwtDU6RGsM5PvLRdM?si=PrlN49fXRImSUP2_n9lw8A Bonne Écoute!! --- Send in a voice message: https://podcasters.spotify.com/pod/show/podcastsagricoles/message

Today I am joined by two very special guests to discuss City of Sanctuary Maternity Stream. Katherine is a midwife and Wan is a woman seeking sanctuary. We discuss some of the barriers vulnerable women face seeking maternity care and some very simple ways we can put them at ease.Want to know more?There are some fantastic videos and resources for maternity services herehttps://cdn.cityofsanctuary.org/uploads/sites/45/2022/11/MATERNITY-RESOURCE-PACK-24-10-22-ammended-links.pdfhttps://maternity.cityofsanctuary.org/https://www.refugeecouncil.org.uk/wp-content/uploads/2021/10/Maternity-care-in-the-UK-for-women-on-asylum-support-print-version_July_2021.pdfhttps://www.leedsth.nhs.uk/a-z-of-services/leeds-maternity-care/meet-the-team/haamla-service/Wan's football videohttps://www.youtube.com/watch?v=OuEagll6op0@maternity_CofS @wanabdullah_ukThank you all for listening, My name is Florence Wilcock I am an NHS doctor working as an obstetrician, specialising in the care of both mother and baby during pregnancy and birth. If you have enjoyed my podcast please do continue to subscribe, rate, review and recommend my podcast on your podcast provider.If you have found my ideas helpful whilst expecting your baby or working in maternity care please spread the word & help theobspod reach other parents or staff who may be interested in exploring all things pregnancy and birth. Keeping my podcast running without ads or sponsorship is important to me. I want to keep it free and accessible to all but it costs me a small amount each month to maintain and keep the episodes live, if you wish to contribute anything to support theobspod please head over to my buy me a coffee page https://bmc.link/theobspodV any donation very gratefully received however small. Its easy to explore my back catalogue of episodes here https://padlet.com/WhoseShoes/TheObsPod I have a wide range of topics that may help you make decisions for yourself and your baby during pregnancy as well as some more reflective episodes on life as a doctor. If you want to get in touch to suggest topics, I love to hear your thoughts and ideas. You can find out more about me on Twitter @FWmaternity & @TheObsPod as well as Instagram @TheObsPod and e...

Un video poema, producido en colaboración con @California Institute for Rural Studies  el Colaborativo del Estudio de Campesinos en Tiempos de COVID (COFS por sus siglos en inglés) y Campesinos de los estados de California, Oregon, y Washington.Video Poemas¡Nosotros, los sin papeles, somos importantes! ¡Nosotros, los sin papeles, somos importantes! (con lengua Mam)Lo que merecemosEso no es normalEso no es normal (en Mixteco, Mam, y español)Support the show

Intelligentes Glas ist keine Neuigkeit mehr. Es wird im Alltag bereits in vielen Bereichen verwendet, zum Beispiel in UV-Fenstern, Brillen oder in Autos. Der Farbwechsel dauerte bis jetzt allerdings mehrere Minuten oder sogar länger. Prof. Dr. Thomas Bein, Physikochemiker an der LMU, hat die Reaktionsdauer mit seinem Team minimiert. Verantwortlich sind sogenannte COFs (covalent organic frameworks). Was so besonderes an ihnen ist, wie sie funktionieren und was sie in Zukunft alles ermöglichen können, erfahrt ihr in der neuen Folge von Neutron.

An Auckland mechanic has written to the Transport Minister warning that truckers are in revolt against an unsafe and unfair Warrant of Fitness system. This follows engineers who certify trucks as safe lodging a mass complaint against the Transport Agency. The mechanic says truckers have told him they can't afford to get a Certificate of Fitness, the truck version of a WoF, and he has seen a trucker threaten violence against an engineer. The mechanic helps run a medium-sized workshop. He signed his letter but asked RNZ not to name him and to alter his voice, for commercial reasons. He says NZTA's punitive system is making vehicle inspection stations that issue WoFs and CoFs paranoid. [audio_play] When RNZ asked Waka Kotahi about the mechanic's letter, the ministry says its aim is improving public safety, that it's crucial to maintain high standards of certification and that its regulatory work is based on evidence. It says its aware of the pressures on the heavy vehicle specialist certification industry and that it is a difficult time, and it is engaging with the industry to work on solutions to these pressures.

Ontario agriculture minister Ernie Hardeman delivers the news of a permanent site and government partnership for Canada’s Outdoor Farm Show; Glacier FarmMedia president Bob Willcox discusses the announcement and new research opportunities for the show; Ontario Federation of Agriculture president Keith Currie offers his thoughts on the permanent Canada’s Outdoor […]

Nathan Bradshaw once worked on a nuclear submarine but wanted more adventure in life. So, he came to grad school and started studying colloidal COFs. Don't know what those are? Why not give this episode a listen and find out! Suggested Reading: Wikipedia for COFs: https://en.wikipedia.org/wiki/Covalent_organic_framework Short article about colloidal COFs: https://cen.acs.org/articles/95/i4/Covalent-organic-frameworks-form-processible.html Follow Nathan Bradshaw: @NPBeardshaw Follow me: PhDrinking@gmail.com, @PhDrinking, @SadieWit, www.facebook.com/PhDrinking/ Thanks to www.bensound.com/ for the intro/outro Thanks to @TylerDamme for audio editing

The weekly show where I answer your questions based on what you’ve left for me in the comments section of my Q&A videos or sent to me by email at AskChrisShelton@gmail.com. This week the questions I take up are: (1) Why in the world does the CofS interact with the Nation of Islam (NOI)? Their philosophies […] The post Critical Q&A #57 appeared first on Chris Shelton - Critical Thinker at Large.

The aim of this work is to further the understanding of the important parameters in the formation process of 2D nanostructures and therewith pioneer for novel applications. Such 2D nanostructures can be composed of specially designed organic molecules, which are adsorbed on various surfaces. In order to study true 2D structures, monolayers were deposited. Their properties have been investigated by scanning tunneling microscopy (STM) under ultra-high vacuum (UHV) conditions as well as under ambient conditions. The latter is a highly dynamic environment, where several parameters come into play. Complementary surface analysis techniques such as low-energy electron diffraction (LEED), X-Ray photo-emission spectroscopy (XPS), and Raman spectroscopy were used when necessary to characterize these novel molecular networks. In order to conduct this type of experiments, high technical requirements have to be fulfilled, in particular for UHV experiments. Thus, the focus is on a drift-stable STM, which lays the foundation for high resolution STM topographs. Under ambient conditions, the liquid-solid STM can be easily upgraded by an injection add-on due to the highly flexible design. This special extension allows for adding extra solvent without impairing the high resolution of the STM data. Besides the device, also the quality of the tip is of pivotal importance. In order to meet the high requirements for STM tips, an in vacuo ion-sputtering and electron-beam annealing device was realized for the post-preparation of scanning probes within one device. This two-step cleaning process consists of an ion-sputtering step and subsequent thermal annealing of the probe. One study using this STM setup concerned the incorporation dynamics of coronene (COR) guest molecules into pre-existent pores of a rigid 2D supramolecular host networks of trimesic acid (TMA) as well as the larger analogous benzenetribenzoic acid (BTB) at the liquid-solid interface. By means of the injection add-on the additional solution containing the guest molecules was applied to the surface. At the same time the incorporation process was monitored by the STM. The incorporation dynamics into geometrically perfectly matched pores of trimesic acid as well as into the substantially larger pores of benzentribenzoic acid exhibit a clearly different behavior. For the BTB network instantaneous incorporation within the temporal resolution of the experiment was observed; for the TMA network, however, intermediate adsorption states of COR could be visualized before the final adsorption state was reached. A further issue addressed in this work is the generation of metal-organic frameworks (MOFs) under ultra-high vacuum conditions. A suitable building block therefore is an aromatic trithiol, i.e. 1,3,5-tris(4-mercaptophenyl)benzene (TMB). To understand the specific role of the substrate, the surface-mediated reaction has been studied on Cu(111) as well as on Ag(111). Room temperature deposition on both substrates results in densely packed trigonal structures. Yet, heating the Cu(111) with the TMB molecules to moderate temperature (150 °C) yields two different porous metal coordinated networks, depending on the initial surface coverage. For Ag(111) the first structural change occurs after annealing the sample at 300 °C. Here, several disordered structures with partially covalent disulfur bridges were identified. Proceeding further in the scope of increasing interaction strength between the building blocks, covalent organic frameworks (COFs) were studied under ultra-high vacuum conditions as well as under ambient conditions. For this purpose, a promising strategy is covalent coupling through radical addition reactions of appropriate monomers, i.e. halogenated aromatic molecules such as 1,3,5-tris(4-bromophenyl)benzene (TBPB) and 1,3,5-tris(4- iodophenyl)benzene (TIPB). Besides the correct choice of a catalytic surface, the activation energy for the scission of the carbon-halogen bonds is an essential parameter. In the case of ultra-high vacuum experiments, the influence of substrate temperature, material, and crystallographic orientation on the coupling reaction was studied. For reactive Cu(111) and Ag(110) surfaces room temperature deposition of TBPB already leads to a homolysis of the C-Br bond and subsequent formation of proto-polymers. Applying additional heat facilitates the transformation of proto-polymers into 2D covalent networks. In contrast, for Ag(111) just a variety of self-assembled and rather poorly ordered structures composed of intact molecules has emerged. The deposition onto substrates held at 80 K has never resulted in proto-polymers. For ambient conditions, the polymerization reaction of 1,3,5-tri(4-iodophenyl)benzene (TIPB) on Au(111) was studied by STM after drop-casting the monomer onto the substrate held either at room temperature or at 100 °C. For room temperature deposition only poorly ordered non-covalent arrangements were observed. In accordance with the established UHV protocol for halogenated coupling reaction, a covalent aryl-aryl coupling was accomplished for high temperature deposition. Interestingly, these covalent aggregates were not directly adsorbed on the Au(111) surface, but attached on top of a chemisorbed monolayer comprised of iodine and partially dehalogenated TIPB molecules. For a detailed analysis of the processes, the temperature dependent dehalogenation reaction was monitored by X-ray photoelectron spectroscopy under ultra-high vacuum conditions.

Covalent Organic Frameworks (COFs) are a novel class of highly stable, purely organic crystalline frameworks made of molecular building blocks. For example, the condensation of boronic acids with appropriate polyols in principle allows the design of precisely controllable structures since their chemical and physical properties can be easily tuned through the selection of the building blocks. The young research field of COFs has attracted scientists due to their extraordinary and versatile properties, however, strategies to control the topology and the properties of the backbone as well as the inner surface are still not well established. With support of Prof. Knochel and his group, who contributed numerous new organic COF linkers, this thesis aims to extend the functionalization strategies for the design of Covalent Organic Frameworks. Investigation of the structural modification and the associated change in physical and chemical properties should lead to progress regarding the applicability of these materials. Employing the concept of reticular chemistry in combination with High Throughput Synthesis Techniques, the formation of a very large Covalent Organic Framework BTP-COF with 4 nm open pores was successfully carried out. The solvothermal co-condensation of 1,3,5-benzenetris(4-phenylboronic acid) (BTPA) and 2,3,6,7-tetrahydroxy-9,10-dimethyl-anthracene (THDMA) was carried out using microwave irradiation instead of conventional synthesis in an oven, thus synthesis time of BTP-COF was reduced from initially 72 h to 5 min. Extending the open pore diameter of a crystalline material to 4 nm, in combination with the resulting high accessible surface area of 2000 m2/g offers great potential to exploit organic reactions in the pores and enables the incorporation of large functional guests, such as polymers or dyes. Bearing these results in mind the scope of functionalization possibilities was expanded from the geometric extension to the chemical modification of the inner surface of COFs. Decorating the organic building blocks with small functional active groups, such as methyl-, -methoxy- and hydroxy- allowed for the successful synthesis of several organic frameworks. Chemical and physical properties of the backbone and the inner surface can be precisely tailored by chemical modification of the building blocks. In order to investigate post-synthetic modification strategies, the methyl- and hydroxy-groups were used as reaction anchor points to covalently attach molecules after framework formation. The co-condensation of benzene-1,3,5-triyltriboronic acid (BTBA) and the 9,10-dimethyl-anthracene-2,3,6,7-tetraol (DMAT) succeeded in the formation of AT-COF-Me. In a radical bromination reaction the methyl groups of an anthracene linker were successfully brominated giving AT-COF-Br without degrading the crystalline framework of AT-COF-Me. The formation of the resulting benzylic bromine was monitored with IR spectroscopy and solid state NMR, respectively. Elemental analysis results correspond to the bromination of half the -CH3 groups. Reaction of (2',5'-dihydroxy-[1,1':4',1''-terphenyl]-4,4''-diyl)diboronic acid (HTDBA) and 2,3,6,7,10,11-hexahydroxytri-phenylene (HHTP) The terphenyl-based hydroxyl substituted T-COF-OH, formed by (2',5'-dihydroxy-[1,1':4',1''-terphenyl]-4,4''-diyl)diboronic acid (HTDBA) and 2,3,6,7,10,11-hexahydroxytri-phenylene (HHTP), was tested in several nucleophilic substitution reactions. Esterification of the –OH group was achieved with either acetylchloride or in a Steglich type reaction with 4-pentynoic acid. X-ray diffraction analysis after the post-synthetic modification shows that the crystallinity of the framework was preserved. This indicates that T-COF-OH is compatible with the reaction conditions. The detection of the newly formed ester moieties in IR and in solid state NMR spectra proves the successful post-synthetic esterification of the –OH groups. Another approach to tailor functionality in COFs is to assemble monomers with distinct properties in COF synthesis. Modification of the backbone of the framework was realized with two heterocyclic building blocks. Benzothiadiazole (BTD) and thienothiophene (TT) monomers are known as building blocks of semiconducting polymers. These molecules were equipped with boronic acid or boronate ester moieties in para position. The linkers were then used in co-condensation reactions with HHTP. The synthesis of BTD-COF was carried out in a two step microwave synthesis procedure: first the pinacolboronate 4,7-Bis(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)benzo[c][1,2,5]thiadiazole (BTDA) was cleaved with HCl, in a second step addition of HHTP resulted in the crystalline product in only 60 min. TT-COF was synthesized in a conventional co-condensation reaction of thieno[3,2-b]thiophene-2,5-diyldiboronic acid (TTBA) with HHTP; the black TT-COF showed aborbance over the whole spectrum of the visible light. Upon irradiation with light the system showed significant photoconductivity. The 3 nm pores of the hole-transporting TT-COF offer enough space to incorporate large fullerene-based electron-transporting materials such as PCBM. This inclusion leads to a significant quenching of the luminescence of TT-COF, indicating light-induced charge transfer at the interface of these two materials. The oriented growth of thin films of porous COF-10, a product of the condensation of 4,4’-biphenyldiboronic acid(BPBA) and HHTP, and TT-COF on self-assembled monomer (SAM)-functionalized gold surfaces is shown. Films grown on boronic acid terminated SAMs result in a parallel orientation of the pores along the substrate. Scanning electron microscopy was used to investigate the morphology of the films. Homogenous films with thicknesses of around 150 nm and a total coverage of the substrates were obtained. In summary, several functionalization strategies are shown to control or tune the topology and properties of Covalent Organic Frameworks. Tuning the topology and functionality to large open pore systems or intrinsic semiconductivity allows incorporation of large functional molecules and study the host-guest interactions. The post-synthetic modification of COFs offers a synthetic pathway to integrate organic functionalities, which cannot be synthesized directly by co-condensation. These strategies provide the means necessary for a precise control of the pore environment and design a porous material for specific applications. A facile and rapid method to produce thin oriented COF films will pave the way for this material to fabricate technological devices, such as photovoltaic devices, sensors of OFETs.