42 research outputs found

    Smart Automation By Using Zigbee and GSM

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    This paper includes automation of electrical devices based upon the presence of an occupant. The number of persons going in and out of a room or lab is counted using a counting mechanism. The network is created using Zigbee transceivers. In every room, a Zigbee transceiver known as an end device. The computer has a GUI interface for the users to control the devices and also to monitor the status of the devices. For providing remote access to the user a GSM modem interfaces with the central computer or PC. This paper shows the design and implementation of a novel low-power, low-cost and hand-held wireless device called a SensePod. Senseo pods can be used by a consumer to interact with a smart home or room using simple gestures like rubbing, taping or rolling the device on any home surface like a dining table. The device is smaller and forms an ad-hoc wireless network using the ZigBee protocol, and it can be easily interfaced to existing home management systems using a Universal Serial Bus (USB) port.

    Towards a Sequential One-Pot Preparation of 1,2,3-Benzotriazin-4(3H)-ones Employing a Key Cp*Co(III)-catalyzed C-H Amidation Step

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    1,2,3‐benzotriazin‐4(3H)‐one derivatives have been recognised for their potential application as pesticides and pharmaceuticals and new methodologies for their preparation, starting from readily accessible reagents would therefore be an attractive proposition. A wide range of differently substituted benzamides are readily available, which provide an excellent substrate scaffold for the application of direct C‐H functionalization protocols. In this context, herein we report the use of a Cp*Co(III) catalyst for the amidation of these benzamides, using 1,4,2‐dioxazol‐5‐ones as amidating agent. The isolable intermediate 2‐ acetamido benzamide products can thereafter be converted to to the desired 1,2,3‐benzotriazin‐4(3H)‐one derivatives through the use of tert‐butyl nitrite under mild conditions. It was found to be possible to perform the second step with the crude reaction mixture obtained from the initial C‐H amidation step, leading to the overall development of a facile one‐pot procedure for the preparation of a range of substituted 1,2,3‐benzotriazin‐4(3H)‐one derivatives, requiring only 5 hours of reaction time, which is also applicable on a gram scale. In addition, the key Cp*Co(III)‐catalyzed C‐H amidation step has been studied by DFT calculations in order to fully elucidate the mechanism

    Six-membered ring systems: with O and/or S atoms

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    A large variety of publications involving O- and S-6-membered ring systems have appeared in 2017. The importance of these heterocyclic compounds is highlighted by the huge number of publications on the total synthesis of natural oxygen derivatives and of other communications dedicated to synthetic derivatives. Reviews on stereoselective organocatalytic synthesis of tetrahydropyrans (17EJO4666), of tetrahydropyrans and their application in total synthesis of natural products (17CSR1661), on the synthesis of the less thermodynamically stable 2,6-trans-tetrahydropyrans (17S4899), on enantioselective synthesis of polyfunctionalized pyran and chromene derivatives (17TA1462), and on enantioselective and racemic total synthesis of camptothecins, including the formation of their pyran-2-one ring (17SL1134), have appeared. Advances in the transition metal-catalyzed synthesis of pyran-2/4-ones (17TL263), N-heterocyclic carbene (NHC)-catalyzed achiral synthesis of pyran-2-one, coumarin and (thio)chromone derivatives (17OBC4731), on the synthesis and transformation of 2H-pyran-2-ones (17T2529) and 2-styrylchromones (17EJO3115) into other heterocyclic compounds, have been surveyed. The strategies to build up the tetrahydropyranyl core of brevisamide (17H(95)81) and the reactions of ketyl radicals, generated from carbonyl derivatives under transition-metal photoredox-catalyzed conditions, leading to isochromen- and chroman-type compounds (17CC13093) were disclosed. Developments in the synthesis of pentafluorosulfanyl(chromene and coumarin) derivatives (17TL4803), photoswitchable D9-tetrahydrocannabinol derivatives (17JA18206), and aminobenzopyranoxanthenes with nitrogen-containing rings (17JOC13626) have been studied.info:eu-repo/semantics/publishedVersio

    ChemInform Abstract: MnO 2

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    An Efficient Approach of Building a New Software Web Framework for Better Software Solutions with DAO Layer

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    Abstract —The Object Relational Mapping is considered as an important way of implementing the data persistent layer. Many of the application development pass through the software development life cycle. This paper focuses on accessing data persistent layer very efficiently in order to build a new software web framework. This new software web framework will have focus on easy access of data access layer in other layer of the software. Whenever a new technology gets introduced the migration of existing code into the new one takes more time and requires careful attention. With the help of newly developed software web framework the migration of existing code becomes in a very easier way. The new software frameworks are developed day by day in order to provide the better engineering solutions to common recurring problems. This paper describes Object Relational mapping framework for data persistent layer which is built on Java Server Pages Tag Library. The JSP tag libraries will also help in order to have prototyping of any of the software solutions in a faster and efficient way. layer only concentrations only on the look and feel of the application. The Object Relational Mapping is being considered as most important way to implement the data persistent layer. Here in ORM the data is efficiently being hold in the databases. This method helps the developer to map the java objects to the relations from the database. These java objects are POJOs and the relations are database schemas [3]. These mapping between object and relations is shown in fig.1. To perform any of the database related operations these objects can be used

    The level of stress among the relatives of clients admitted in intensive care unit

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    The impression is that the feeling of stress come from outside sources when , in reality, it happens inside of us. When we feel as though we are under pressure , our bodies react the same way that we have trained them to do with a rise in blood pressure, tightening of muscle and accelerated breathing. Some stress is unavoidable and is actually good for motivated behavior. But too much stress leads to troubles that can range from stomach to anxiety attacks and even as serious as heart attacks.Family members of ICU patients may experience stress, disorganization and helplessness, which may lead to anxiety. Untreated family stress may lead to lack of trust of healthcare providers, inability to company with hospital regulations and decisions, anger and hostility, and litigation. Situations that contribute to stress are lack of ICU waiting areas, lack of multidisciplinary meetings between nurses and physicians to discuss care and treatment, and lack of a quiet room for consultation with family members. Yates (2009) says that more than two thirds of family members visiting intensive care unit (ICU) patients have symptoms of anxiety or depression during the first days of hospitalization. Identifying determinants of these symptoms would help caregivers support families at patient discharge. The prevalence of symptoms of anxiety and depression remains high at the end of the ICU stay, whether the patient is well enough to be discharged or is near death. Delva et.al (2002) explores the needs and anxiety levels of relatives faced with the stress of a family member's critical care hospitalization in relation to the relatives' age, gender, educational level and type of kinship with the patient and in relationship to the characteristics of the admission and the Condit condition of the patient

    Palladium-Catalyzed Deaminative Phenanthridinone Synthesis from Aniline via C–H Bond Activation

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    This work reports palladium-catalyzed phenanthridinone synthesis using the coupling of aniline and amide by formation of C–C and C–N bonds in a one-pot fashion via dual C–H bond activation. It involves simultaneous cleavage of four bonds and the formation of two new bonds. The present protocol is ligand-free, takes place under mild reaction conditions, and is environmentally benign as nitrogen gas and water are the only side products. This transformation demonstrates a broad range of aniline and amide substrates with different functional groups and has been scaled up to gram level

    <i>tert</i>-Butyl Nitrite-Mediated Synthesis of <i>N</i>‑Nitrosoamides, Carboxylic Acids, Benzocoumarins, and Isocoumarins from Amides

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    This work reports <i>tert</i>-butyl nitrite (TBN) as a multitask reagent for (1) the controlled synthesis of <i>N</i>-nitrosoamide from <i>N</i>-alkyl amides, (2) hydrolysis of <i>N</i>-methoxyamides to carboxylic acids, (3) metal- and oxidant-free benzocoumarin synthesis from <i>ortho</i>-aryl-<i>N</i>-methoxyamides via N–H, C–N, and C–H bond activation, and (4) isocoumarin synthesis using Ru­(II)/PEG as a recyclable catalytic system via <i>ortho</i>-C–H activation and TBN as an oxygen source. The sequential functional group interconversion of amide to acid has also been examined using IR spectroscopic analysis. Additionally, this methodology is highly advantageous due to short reaction time, gram scale synthesis, and broad substrate scope
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