POPULARITY
A new MP3 sermon from Antioch Presbyterian Church (PCA) is now available on SermonAudio with the following details: Title: "The Urgent Gospel, P21, Faithful Unto Death" Subtitle: Mark: The Urgent Gospel Speaker: Kelley Buffaloe Broadcaster: Antioch Presbyterian Church (PCA) Event: Sunday Service Date: 7/11/2021 Bible: Mark 6:14-29 Length: 21 min.
A new MP3 sermon from Antioch Presbyterian Church (PCA) is now available on SermonAudio with the following details: Title: "The Urgent Gospel, P21, Faithful Unto Death" Subtitle: Mark: The Urgent Gospel Speaker: Kelley Buffaloe Broadcaster: Antioch Presbyterian Church (PCA) Event: Sunday Service Date: 7/11/2021 Bible: Mark 6:14-29 Length: 21 min.
A new MP3 sermon from Antioch Presbyterian Church (PCA) is now available on SermonAudio with the following details: Title: "The Urgent Gospel, P21, Faithful Unto Death" Subtitle: Mark: The Urgent Gospel Speaker: Kelley Buffaloe Broadcaster: Antioch Presbyterian Church (PCA) Event: Sunday Service Date: 7/11/2021 Bible: Mark 6:14-29 Length: 21 min.
This week there's a lot to celebrate after a series of DSA electoral wins across the state, including Kiani Conley-Wilson, and cautious optimism for Marketa Edwards' campaign as well. And AG Letitia James settles a lawsuit with Johnson and Johnson for $230 million to ease the opium epidemic. Election results: https://www.troyrecord.com/news/rensselaer-county-2021-primary-election-results/article_6b09e04e-d3cd-11eb-8c8d-b72a4b1298ca.html https://www.rensco.com/wp-content/uploads/2021/06/P21.html Take that J&J: https://ag.ny.gov/press-release/2021/attorney-general-james-reaches-230-million-settlement-treatment-and-prevention Support the show on Patreon! https://www.patreon.com/Ironweeds
Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.10.23.352161v1?rss=1 Authors: Gildawie, K. R., Ryll, L. M., Hexter, J. C., Peterzell, S., Valentine, A. A., Brenhouse, H. C. Abstract: Adversity early in life substantially impacts prefrontal cortex (PFC) development and vulnerability to later-life psychopathology. Importantly, repeated adverse experiences throughout childhood increase the risk for PFC-mediated behavioral deficits more commonly in women. Evidence from animal models points to effects of adversity on later-life neural and behavioral dysfunction; however, few studies have investigated the neurobiological underpinnings of sex-specific, long term consequences of multiple developmental stressors. We modeled early life adversity in rats via maternal separation (postnatal day (P)2-20) and juvenile social isolation (P21-35). Adult (P85) male and female rats were assessed for differences in the presence and structural integrity of PFC perineuronal nets (PNNs) enwrapping parvalbumin (PV)-expressing interneurons. PNNs are extracellular matrix structures formed during critical periods in postnatal development that play a key role in the plasticity of PV cells. Females - but not males - exposed to multiple hits of adversity demonstrated a reduction in PFC PV cells in adulthood. We also observed a sex-specific, potentiated reduction in PV+ PNN structural integrity. Moreover, correlations between neural disruption and hyperactivity/risk-assessment behavior were altered by adversity differently in males and females. These findings suggest a sex-specific impact of repeated adversity on neurostructural development and implicate PNNs as a contributor to associated behavioral dysfunction. Copy rights belong to original authors. Visit the link for more info
Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.10.12.336941v1?rss=1 Authors: Mukhopadhyay, S., Chatterjee, A., Tiwari, P., Ghai, U., Vaidya, V. A. Abstract: Elevation of serotonin via postnatal fluoxetine (PNFlx) treatment during critical temporal windows is hypothesized to perturb the development of limbic circuits thus establishing a substratum for persistent disruption of mood-related behavior. We examined the impact of PNFlx treatment on the formation and maintenance of perineuronal nets (PNNs), extracellular matrix (ECM) structures that deposit primarily around inhibitory interneurons, and mark the closure of critical period plasticity. PNFlx treatment evoked a significant decline in PNN number, with a robust reduction in PNNs deposited around parvalbumin (PV) interneurons, within the CA1 and CA3 hippocampal subfields at postnatal day 21 in Sprague-Dawley rat pups. While the reduction in CA1 subfield PNN number was still observed in adulthood, we observed no change in colocalization of PV-positive interneurons with PNNs in the hippocampi of adult PNFlx animals. PNFlx treatment did not alter hippocampal parvalbumin, calretinin, or reelin-positive neuron numbers in PNFlx animals at P21 or in adulthood. We did observe a small, but significant increase in somatostatin (SST)-positive interneurons in the DG subfield of PNFlx-treated animals in adulthood. This was accompanied by altered GABA-A receptor subunit composition, increased dendritic complexity of apical dendrites of CA1 pyramidal neurons, and enhanced neuronal activation revealed by increased c-Fos-positive cell numbers within hippocampi of PNFlx-treated animals in adulthood. These results indicate that PNFlx treatment alters the developmental trajectory of PNNs within the hippocampus, raising the possibility of a disruption of critical period plasticity and the establishment of an altered excitation-inhibition balance within this key limbic brain region. Copy rights belong to original authors. Visit the link for more info
PunchOut Catalog: If you’re in B2B DISTRIBUTION this is not a new term. As a supplier, ever wondered why buyers keep asking you about PunchOut Catalog? Buyers use their own eProcurement application and punchout helps them to enter the supplier’s website within their browser through a web-based catalog without leaving the actual procurement application.So, this week we took one of the interesting B2B features and brought in Brady to the studio to teach you all about PunchOut catalogs and how it can help your distribution business.In this episode, we covered some interesting topics including punchout catalog, eProcurement, order to invoice - purchase order automation, eInvoicing, and more. Go check ‘em out.Show Notes[1:21] How is the business going so far?[1:59] What is eProcurement and what is a punchout catalog?[3:54] The difference between punchout and hosted catalogs.[5:41] What percent of the B2B Distributors are currently using eProcurement?[8:51] What do eCommerce and eProcurement mean to a B2B Distributor, are these 2 separate channels?[12:42] Realtime example from Moody Price LLC., PunchOut2Go integration for someone using Magento 2 and Epicor Prophet 21 (P21).[15:47] How are things in the manufacturing and distribution industry so far?[19:50] What is the timeline of punchout integration.[21:28] Features that PunchOut2Go offers and how does it differ from the competition.Show References and LinksPunchOut2Go.comBrady Behrman on LinkedInB2B Procurement Market OverviewCloras, ERP Integration PlatformDriven: Ecommerce at Work HomeIf you have a topic that you would like to cover us on our upcoming episodes or if you’re running a successful online business and would like to share the insights with the community, please feel free to send an email to podcast@dckap.com.
A primeira da leitura da 2ª temporada foi Caçadora, da Kiersten White, o primeiro livro de uma nova série que se passa no universo de Buffy A Caça Vampiros. Para falar sobre essa história temos dois pontos de vista opostos: Bruna já assistiu a série várias vezes e esperava esse livro há meses, e Mayra nunca assistiu e não sabia nada sobre o universo. Esse episódio foi feito em parceria com a Plataforma 21, selo jovem adulto da editora V&R. Siga a P21 no Twitter e no Instagram para saber mais sobre os próximos lançamentos. Sinopse do livro: Nina e sua irmã gêmea, Artemis, cresceram numa escola de guardiões. Nela, os estudantes são treinados para guiar e proteger caçadoras – estas, Escolhidas capazes de enfrentar as forças da escuridão. Apesar da mãe de Nina ser parte do Conselho dos Guardiões, a jovem segue seus instintos de cura e de cuidar, ganhando aos poucos seu espaço como a paramédica da escola. Até o dia em que a vida de Nina muda para sempre: a jovem torna-se uma Escolhida. E o pior: ela é a última Escolhida, para sempre. Tudo isso é culpa de Buffy – a famosa caçadora que o pai da jovem morreu para proteger. Assim, conforme Nina aperfeiçoa suas habilidades de caçadora com Leo, seu guardião em treinamento, há uma porção de eventos que a mantêm ocupada. Isso inclui demônios soltos por aí e uma criatura sombria que insiste em aparecer em seus sonhos… Mas é quando uma série de assassinatos começa a acontecer que seus poderes são colocados à prova: ela sabe que alguém que ama poderá ser o próximo. --- Siga o Wine About It no Twitter e Instagram. Siga a Mayra no Twitter e no Instagram. Siga a Bruna no Twitter e no Instagram.
In this episode, I am going to share some of my recent experiences with Dell Servers, VMware, DNS, P21 and more. Host: Paul Joyner Email: paul@sysadmintoday.com Facebook: https://www.facebook.com/sysadmintoday Twitter: https://twitter.com/SysadminToday Show SponsorKaseya: IT Management Software and Monitoring Solutions Request a demo today at www.kaseya.com/sysadmintoday Show Links 3 ESXi Backup Methods using the Command-Linehttps://www.altaro.com/vmware/esxi-backup-command-line/ ESXi Host Configuration Backup Failshttps://communities.vmware.com/thread/567954 https://www.dell.com/support/manuals/lc/en/lcdhs1/vmware-esxi-6.x/esxi6.xrn_pub/scratch-partition-stops-working-after-hardware-or-software-iscsi-is-enabled-on-esxi-with-the-scsi-?guid=guid-12321d40-c2a4-4a71-86fd-1104eaa43a54&lang=en-us FoxIT: PDF Reader and Editor https://www.foxitsoftware.com/ Dell EMC SC Series Storage https://www.dellemc.com/en-us/storage/sc-series.htm# EveryCloud IT Pro Tuesday Blog https://www.everycloud.com/it-pro-tuesdays Please Support the Channel https://www.patreon.com/sysadmintoday
Ross Monaghan, Soil Scientist at AgResearch, joined us to talk about taking care of stock, soils and water in winter. Winter grazing of forage crops is an important issue for farmers. It can be a good source of income through setting finishing animals up for high margins or through taking on grazers. It can also come at a cost from pugging, through loss of nutrients and topsoil and by pollution of water. In addition to all that, lots of animals on wet soils in winter can be a concern for the community. Recent research from the collaborative P21 programme has come up with some answers to improve animal performance while at the same time avoiding, remedying or mitigating the negative impacts.
Yes, we’re the first ones to say it – both Mercedes drivers got lucky in Spa. Nico Rosberg won his 20th Grand Prix because of Lewis Hamilton’s grid penalties. In the same breath, we’ve got to agree that Hamilton was lucky to make it to the podium (from P21) thanks to the Safety Car period and the red flag. Though we wonder why Lewis Hamilton didn’t win the 44 lap Grand Prix, if 44 is his lucky number! Only 9 points separate the duo, which way will the remainder of the season go? Formula 1 returned after the summer break with a bang at Spa – it was a race of collisions and crashes (mostly into Ferraris). Was Vettel at fault at the first corner? Vettel should have a ‘How to Overtake Max Verstappen’ class with mandatory attendance for Raikkonen. Max Verstappen has been accused of dangerous driving, but of course the FIA won’t do anything about it. He’s THE crowd puller, at the moment. Though Niki Lauda believes that Max needs to visit a psychiatrist! Lauda says that he will call Jos if Max does not listen – Parent Teacher Meeting for the teenager in Monza? Also, did the young sensation not win the ‘Driver of the Day’ in Spa because his entire Orange Army was at the race track? Of course, Hamilton did find support in his Barmy Army. Force India love affair with Spa continued, though Hulkenberg may have been robbed of a podium finish. The team’s survival is in question if Sergio Perez moves teams in 2017. Maybe finishing 4th in the Constructors’ Championship will earn them the deficit. Will Kevin Magnusen be fit for Monza – and if not, will Renault make the popular decision of getting Carmen Jorda to drive? And was Fernando Alonso’s P22 to P7 more noteworthy than Hamilton’s recovery drive? With newer talent gaining popularity and faster cockpits, will Alonso have a chance for his final flourish at all? Over the summer break, we learnt that Bernie Ecclestone plans to sell Formula 1's radio messages (with a premium charge for listening to Raikkonen’s radio?). On that note, Minttu signed up for a lifetime of realtime Raikkonen humour! Hamilton hung out with Nicole over summer, and she was a real-life Pussy Cat (Doll). Also, our favourite moment of the summer break, Ricciardo calling bull-sh** on Hamilton’s tweet! Nico Rosberg has never won at Monza, will it be yet another ‘first’ for him? And will Hamilton equalize Fangio and Senna’s record for maximum poles? There’s a lot of Formula 1 this week and on our podcast, tune in! (Season 2016, Episode 27) The Inside Line F1 Podcast is hosted by Mithila Mehta and Kunal Shah. This Formula One podcast offers a unique humourous view on the sport. Follow us on Facebook: http://bit.ly/insidelineonfacebook and on Google+: http://bit.ly/insidelineongoogleplus Follow on Twitter: Mithila Mehta (http://www.twitter.com/mith_m) and Kunal Shah (http://twitter.com/kunalashah) Subscribe on iTunes Store: http://bit.ly/insidelinef1podcast RSS for Google, Android, Blackberry or Windows phones: http://bit.ly/insideline (You will need a Podcast player!) SoundCloud: http://bit.ly/insidelineonsoundcloud TuneIn Radio: http://bit.ly/insidelinef1podcast-tuneinradio MixCloud: http://www.mixcloud.com/insidelinef1podcast/ Spreaker: http://www.spreaker.com/user/insidelinef1podcast DailyMotion: http://www.dailymotion.com/inside-line-f1-podcast And hear our ever popular episodes from the previous weeks: 1. Ferrari Were Forced To Re-sign Kimi Raikkonen (http://bit.ly/29hLA7I) 2. Hamilton Must Be Pissed Off With Lauda (http://bit.ly/22r6XsP) 3. Le Mans Says No To Formula 1 (http://bit.ly/22nSUUU) 4. Max Verstappen, Talent of the Century (http://bit.ly/1OxcZWf) 5. Verstappen & Hamilton, F1's Dream Team? (http://bit.ly/29KyEJx) #F1 #Formula1 #FormulaOne #CarRacing #AutoRacing #Ferrari #Mercedes #Mclaren #Honda #RedBull #Motorsport #Motorracing #Sports #Podcast #RedBullRacing #MaxVerstappen #LewisHamilton
P5. Mrs. Brice had twenty-five mice. 布莱斯太太有25只老鼠。 P6. She fed her mice the finest cheese. 她用最好的奶酪来喂养她的老鼠。 P7. She washed and dried them behind their ears, so they were always clean. 她经常给老鼠们洗澡并把他们的耳后擦干,所以老鼠们总是非常干净。 P8. Mrs. Brice loved to sing for them. When she played the piano, twenty-four little mice danced around her. 布莱斯太太很喜欢为老鼠们唱歌。 当她弹钢琴的时候,24只小老鼠围着她跳舞。 P9. One very small mouse danced on top of her hand. He was afraid to fall between the keys. 一只非常小的老鼠在她手背上跳舞,却又害怕掉进琴键间。 P10. When Mrs. Brice went to bed, twelve little mice slept on one side of her. Twelve little mice slept on the other side. One very small mouse slept on the clock, in case he wanted to know what time it was. 当布莱斯太太躺床上睡觉时, 0 00 12只小老鼠睡在她一侧,12只小老鼠睡在她另一侧, 非常小的那只小老鼠睡在时钟上,免得他不晓得时间。 P11.In the morning, Mrs. Brice did exercises. She stretched her arms and legs. She bent over and touched her toes with her fingers. 清晨,布莱斯太太做运动。 她伸展胳膊和腿,她弯腰,用手指触碰足尖。 P12.“One, two, three, four, five, six.... One, two, three, four, five, six ....” “1,2,3,4,5,6......1,2,3,4,5,6......” P13.Twenty-four little mice did exercises too. 24只小老鼠也跟着做运动。 P14. They streched, they bent, 他们做伸展运动,他们弯腰 P15. they touched their toes. One very small mouse kept on sleeping. 碰碰自己的足尖。 非常小的那只小老鼠还在睡觉。 P16. “It it time for our walk,” said Mrs. Brice. Twelve little mice walked in front of her. Twelve little mice walked in back. One very little small mouse sat on top of Mrs. Brice hat, so he could see where they were going. P17. He saw a cat. P18. Twelve little mice ran this way. Twelve little mice ran that way. P19. One very small mouse jumped down to the ground and ran this way and that. P20. He ran so many different ways, the cat got tired of chasing him and went back. to whatever he had been doing. P21. “What a clever little mouse you are,” said Mrs. Brice. “Now we can go to buy some food.” P22. Twenty-four little mice sat in a cart and enjoyed the ride. One very small mouse sat in front. P23. They went up one aisle. P24. They went down another. P25. Mrs. Brice bought food in cans, food in jars, cold food, hot food. P26. “Now we can go home,” said Mrs. Brice. Twenty-four little mice were glad. But one very small mouse kept on leading the way. He led them to the dairy counter. P28. Mrs. Brice bought a nice, big cheese. P29. Then she and her mice went home to eat it. P30. After they ate, Mrs. Brice sang and played the piano. P31. Twenty-four mice danced around her. P32. One very small mouse kept right on eating.
Graduate School of Systemic Neurosciences - Digitale Hochschulschriften der LMU
The medial superior olive (MSO) is an auditory brainstem nucleus within the superior olivary complex. Its functional role for sound source localization has been thoroughly investigated (for review see Grothe et al., 2010). However, few quantita tive data about the morphology of these neuronal coincidence detectors are available and computational models incorporating detailed reconstructions do not exist. This leaves open questions about metric characteristics of the morphology of MSO neurons as well as about electrophysiological properties that can be discovered using detailed multicompartmental models: what are the passive parameters of the membrane? What is the axial resistivity? How do dendrites integrate synaptic events? Is the medial dendrite symmetric to the lateral dendrite with respect to integration of synaptic events? This thesis has two main aspects: on the one hand, I examined the shape of a MSO neuron by developing and applying various morphological quantifications. On the other hand, I looked at the impact of morphology on basic electrophysiological properties and on characteristics of coincidence detection. As animal model I used Mongolian gerbils (Meriones unguiculatus) during the late phase of development between postnatal day 9 (P9) and 37 (P37). This period of time is of special interest, as it spans from just before hearing onset at P12 – P13 (Finck et al., 1972; Ryan et al., 1982; Smith and Kraus, 1987) to adulthood. I used single cell electroporation, microscopic reconstruction, and compartmentalization to extract anatomical parameters of MSO neurons, to quantitatively describe their morphology and development, and to establish multi-compartmental models. I found that maturation of the morphology is completed around P27, when the MSO neurons are morphologically compact and cylinder-like. Dendritic arbors become less complex between P9 and P21 as the number of branch points, the total cell length, and the amount of cell membrane decrease. Dendritic radius increases until P27 and is likely to be the main source of the increase in cell volume. In addition, I showed that in more than 85% of all MSO neurons, the axonal origin is located at the soma. I estimated the axial resistivity (80 Ω·cm) and the development of the resting conductance (total conductance during the state of resting potential) which reaches 3 mS/cm2 in adult gerbils. Applying these parameters, multi-compartmental models showed that medial versus lateral dendritic trees do not equally integrate comparable synaptic inputs. On average, latencies to peak and rise times of lateral stimulation are longer (12 μs and 5 μs, respectively) compared to medial stimulation. This is reflected in the fact that volume, surface area, and total cell length of the lateral dendritic trees are significantly more larger in comparison to the medial ones. Simplified models of MSO neurons showed that dendrites improve coincidence detection (Agmon-Snir et al., 1998; Grau-Serrat et al., 2003; Dasika et al., 2007). Here, I confirmed these findings also for multi-compartmental models with biological realistic morphologies. However, the improvement of coincidence detection by dendrites decreases during early postnatal development.
Kids. Cable. Learning. The Official Podcast Channel of Cable in the Classroom!
At the 2007 National Educational Computing Conference (NECC), Cable in the Classroom's Senior Director of Education Policy, Douglas Levin, had the opportunity to join Susan Patrick, President and CEO of the North American Council for Online Learning (NACOL), in presenting on the intersection of two emerging educational policy innovations: virtual schooling and 21st century skills.Cable in the Classroom, as the national education foundation of the U.S. cable industry, is a founding board member of the Partnership for 21st Century Skills. The Partnership is the leading advocacy organization infusing 21st Century skills into education.NACOL and the Partnership for 21st Century Skills collaborated on a joint position paper released late last year and this presentation [MP3, 38MB] generally follow the outline of that collaboration.The punchline: If we are serious about ensuring that all students master the skills they will need for life, work, and citizenship in the 21st century, the continued expansion of virtual schooling (blended and wholly online) will be required. At the same time, while virtual schools by their very nature foster some of the skills outlined by the Partnership, many will have to become more intentional in their approaches to teaching and assessing the full range of 21st century skills.Those interested in the work of the Partnership for 21st Century Skills might also be interested in perusing the Spring 2006 edition of Cable in the Classroom's Threshold, focused on high school reform and 21st century skills.Technorati tags: n07s689, necc, necc 2007, necc07, virtual schools, online learning, distance education, 21st century skills, P21, cable, CIC, Cable in the Classroom, cableintheclassroom, tv, school, education, NCTA
Previous studies revealed changes of pericentromeric heterochromatin arrangements in postmitotic Purkinje cells (PCs) during postnatal development in the mouse cerebellum (Manuelidis, 1985; Martou and De Boni, 2000). Here, we performed vibratome sections of mouse cerebellum (vermis) at P0 (day of birth), at various stages of the postnatal development (P2-P21), as well as in very young (P28) and 17-months-old adults. FISH was carried out on these sections with major mouse satellite DNA in combination with immunostaining of the nucleolar protein B23 (nucleophosmin). Laser confocal microscopy, 3D reconstructions and quantitative image analysis were employed to describe changes in the number and topology of chromocenters and nucleoli. At all stages of postnatal PC development heterochromatin clusters were typically associated either with nucleoli or with the nuclear periphery, while non-associated clusters were rare (
Fakultät für Chemie und Pharmazie - Digitale Hochschulschriften der LMU - Teil 01/06
2,4,6-tribromophenyl azide was synthesised as previously described and fully characterised using Infrared and Raman spectroscopy, elemental analysis, NMR spectroscopy (1H, 13C, 14N) and X-ray structural analysis. 2,4,6-tribromophenyl azide was recrystallised from ethanol to give pink needles which are monoclinic, with space group P21/n. The crystal packing diagram of 2,4,6-tribromophenyl azide shows that every terminal N(3) atom of the azide group has two intermolecular contacts with two bromine atoms of symetrically related molecules within the unit cell. The intermolecular distances are N(3) to Br(2)* (x – 0.5, -y-0.5, z-0.5) 3.605 Å and N(3) to Br(1)* (x + 1, y, z) 3.881 Å. These distances are both below the sum of the van der Waals radii of both atoms. The crystal packing diagram of 2,4,6-tribromophenyl azide is shown in the figure below. 2,6-diiodo-4-nitrophenyl azide was synthesised as previously described and fully characterised using Infrared and Raman spectroscopy, elemental analysis, NMR. spectroscopy (1H, 13C, 14N) and X-ray structural analysis. 2,6-diiodo-4-nitrophenyl azide was recrystallised from ethanol to give green needles which are monoclinic, with space group P21/c. There are two independent molecules in the asymmetric unit, one molecule has an ordered azide group and the other molecule has a disordered azide group. There is a most unusual intermolecular contact of 3.041 Å between O(11) and I(22) and between O(21) and I(12). This distance is well below the sum of the van der Waals radii of both atoms. The crystal packing is a chain with alternate ordered ands disordered molecules linked by this oxygen –iodine intermolecular contact (see figure below) The ab initio calculations of the vibrational frequencies for all of the halogen phenyl azides derivates were carried out at the self consistent HF level of theory using a 6-31G(d) basis set. Generally the agreement between calculated and experimentally observed (IR, Raman) frequencies is very good at HF/6-31G(d) level of theory for all derivatives prepared so that no scaling of the computed frequencies was necessary. The fact that the asymmetric azide vibration is calculated too high for 2,4,6-tribromophenyl azide, 2,4,6-trichlorophenyl azide 199 and 2,6-diiodo-4-nitrophenyl azide may or may not be explained by strong intermolecular interactions via the N3 group in these compounds as revealed by X-ray diffraction which due to the increased formal) charges on Nβ and Nγ weaken the terminal nitrogen-nitrogen triple bond. The thermal decomposition of three nitrophenyl azides, 1,3,5-(NO2)3-2,4,6-(N3)3-C6 (TNTA), 1,3-(NO2)2-2,4,6-(N3)3-C6H (DNTA) and 1,3,5-(NO2)3-2-(N3)-C6H2 (TNMA) was studied experimentally using gas-phase IR spectroscopy 1,3,5-(NO2)3-2,4,6-(N3)3-C6 → 6 CO + 6 N2 (1) 1,3-(NO2)2-2,4,6-(N3)3-C6H → HCN + 4 CO + 5 N2 + C (2) 1,3,5-(NO2)3-2-(N3)-C6H2 → 2 HCN + 2 CO2 + NO2 + 3/2 N2 + 2 C (3) The combustion of 1,3.5-(NO2)3-2,4,6-(N3)3-C6 (TNTA) in an O2 atmosphere (two fold excess) yielded CO2, N2, very small amounts of NO2 and traces of N2O (eq. 4). 1,3,5-(NO2)3-2,4,6-(N3)3-C6 + 3 O2 → 6 CO2 + 6 N2 (4) In a further experiment exploring the potential of TATA as a solid fuel we mixed the material with the stoichiometric amount (cf. eq. (5)) of NH4NO3 1,3,5-(NO2)3-2,4,6-(N3)3-C6 + 6 NH4NO3 → 6 CO2 + 12 N2 12 H2O (5) The calculated enthalpy value of –908.9 kcal mol-1 makes the 1:6 molar mixture of 1,3-5- (NO2)3-2,4,6-(N3)3-C6 and NH4NO3 a very promising high energy density material (HEDM) the potential of which we are going to explore in more detail in future studies. In the drophammer testing of TNMA, DNTA and TNTA the order of the acoustic level is TNMA < DNTA < TNTA, but the values for DNTA and TNTA are very similar. Even the weakest of the investigated organic explosives (TNMA) is more powerful than AgN3 or Pb(N3)2, if the acoustic level is interpret as somewhat proportional to the detonation power. The calculated factor (F) and detonation velocities ( D) for TNMA, DNTA and TNTA were calculated using the Rothstein equation that calculates the detonation velocities of a variety of explosives on the basis of their molecular formulae. The calculated detonation velocities (D) are in agreement with the drophammer tests for these compounds i.e the values for detonation velocities (D) show TNMA < DNTA < TNTA, but the values for DNTA (9.185 mm µs-1) and TNTA (9.441 mm µs-1) are very similar. TNMA, DNTA and TNTA have higher calculated F factors and detonation velocities than several commercial explosives. In order to measure the 14N NMR spectrum of a pentazole, the pentazole was prepared in the NMR tube already in the probe. This was done by dissolving the diazonium salt in dichloromethane and placing this solution in the NMR tube and freezing it solid with liquid nitrogen and then the azide solution was added on top and also frozen solid, the NMR tube was then placed in the probe at –50°C. The two layers were allowed mix in the NMR tube as it obtained equilibrium at –50°C. The 14N NMR spectrum was recorded from the moment the tube was placed in the probe. In most of the spectra recorded using this method it was possible to see very small signals in the predicted region for the nitrogen atoms of the pentazole for about 30 minutes but again the strongest signals belong to the corresponding azide. The signals in the predicted pentazole region were not much more than the noise signal so we were not able to assign these with any confidence. However in the experiment using the above method for 2,4-dichlorophenylpentazole we were able to see three clearly distinctive signals in the expect range for the nitrogen atoms in a pentazole . This experiment was carried out several times and each time we observed the same spectra. As well as the three signals of the pentazole the are two signal of the 2,4-diclorophenyl azide present. The spectrum of this experiment can be seen in figure below. When the sample was allowed to warm up to room temperature the three signals for the pentazole disappear but the two signals of the azide remain. We can tentatively assign the signals in the spectrum of 2,4-dichlorophenylpentazole and 2,4 diclorophenyl azide as N1 ( δ = -176.0 ) ppm, N2 N5 ( δ = -72.0 ) ppm, N3 N4 ( δ = -24.0 ) ppm for the pentazole and Nβ ( δ = -135.0 ) ppm and Nγ ( δ = -141.0 ) ppm for the azide. Although the values we obtained for the 14N spectrum of the 2,4-dichloropenyl pentazole are shifted from the values previously reported, we are certain that the signals have been assigned correctly due to the fact that no other nitrogen containing substance could be present at –50°C and that the signals disappear as the temperature is raised which is in accordance with the pentazole decomposing to the azide. This is the first reported 14N NMR spectrum of a pentazole.
Dichloroethyne ClCECCl reacts with Pt(PPh3)2(C2H4) or Pt(PPh& to give the a-complex Pt(PPh3)2(+21C=CC1) (l),w hich can be isomerized by prolonged refluxing in toluene to trans- (Ph3P)zC1Pt-C==CC1 (2). 2 easily undergoes exchange reactions with alkylphosphines and with halide anions to yield trans-(R3P)2ClPt-C=CCl (R = Et (3)) Bu (4)) and trans-(Ph3P)z- (X)Pt-C=CCl (X = F (5a), Br (5b), I (5c)), respectively. The alkylphosphine complexes 3 and 4 can also be obtained by reaction of Pt(PR3)4 (R = Et, “Bu) with ClCECCl or from 1 and the corresponding phosphine. When Pt(PPh&(CzH4) is added to a solution of 3, a dinuclear complex 6 is formed, in which the C=C-Cl group acts as a a,a-bridging ligand. Upon standing, oxidative addition of the remaining C-C1 bond occurs and the p-ethynediyl complex trans- C1(R3P)2Pt-C=C-Pt(PPh3)2C1-Cis (R = Et (7a)) can be obtained. The corresponding p-ethynediyl complex 7b (R = Ph) is formed directly from 2 and Pt(PPh&(CzH4). 7b isomerizes upon heating in toluene to the symmetrical all-trans isomer 8. The molecular structures of 1 and 8 were determined by X-ray diffraction (1: C ~ ~ H ~ ~ C ~ Z P ~ Pa ~=C 10H.3Z11C(3~) AZ,, b = 10.392(4) A, c = 33.675(16) A, P = 90.17(3)’, monoclinic, P21/n, 2 = 4. 8: C74H&1zP4Ptz9 a = 12.938(2) A, b = 19.964(3) A, c = 24.844(3) A, P = 96.14(1)’, monoclinic, C2/c, 2 = 4).