906 research outputs found

    Succulents

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    Sukulenti su biljke koje mogu pohraniti velike količine vode u svojim specijaliziranim stanicama. Ta prilagodba razvila se kao posljedica života na područjima gdje se izmjenjuju sušna i kišna razdoblja. Za takav život razvile su i posebnu morfologiju vegetativnih organa, pa tako razlikujemo sukulente stabljike – imaju sočne, zadebljale stabljike, i sukulente lista – imaju mesnate listove za pohranu vode. Predstavljene su reprezentativne porodice tih dviju skupina – Cactaceae (sukulenti stabljike) i Agavaceae (sukulenti lista), koje karakterizira velika raznolikost oblika, veličine, boja, cvijetova i načina oprašivanja. Cactaceae i Agavaceae potječu iz Novog svijeta, ali su danas, zahvaljujući čovjeku, rasprostranjene duž cijelog tropskog i subtropskog pojasa. Nastanjuju pustinjska područja i polupustinje, stepe, šljunčana zemljišta, te rjeđe šume i travnjake. Predstavnici ovih skupina imaju široku primjenu u ljudskim životima, od prehrane preko industrijske proizvodnje različitih preparata, pa do uzgoja u hortikulturi i našim domovima.Succulents are plants capable of storing water in their specialized cells. That adaptation has developed as a result of life in regions where dry and rainy periods alternate through the year. For that kind of life they have developed a special morphology of vegetative organs, according to which we can divide them in two categories: stem succulents which have juicy and thicken stems, and leaf succulents which have flashy leaves for storing water. Representative families of those two categories were introduced – Cactaceae (stem succulents) and Agavaceae (leaf succulents). They have a huge variety in shape, size, color, flowers and pollination ways. Cactaceae and Agavaceae originates from the New World, but thanks to human activity, today they are found throughout the world. They inhabit deserts and semi-deserts, dry steppe, graveled plains, rarely forests or grassland. Specimens of this families have a wide usage in mans' life, from nutrition and industrial manufacture to horticultural and personal cultivation

    Two new zinc(II) acetates with 3- and 4-aminopyridine

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    The synthesis and characterization of two new zinc(II) coordination compounds with 3- and 4-aminopyridine are reported. They were obtained after adding a water solution of Zn(CH3COO)2Zn(CH_3COO)_2 · 2H2O2H_2O or dissolving solid Zn(CH3COO)2Zn(CH_3COO)_2 · 2H2O2H_2O in methanol solutions of 3- and 4-aminopyridine. The products were characterized structurally by single-crystal X-ray diffraction analysis. Colourless crystals of the compound synthesized by the reaction of Zn(CH3COO)2Zn(CH_3COO)_2 · 2H2O2H_2O and 3-aminopyridine (3-apy), are built of trinuclear complex molecules with the formula [Zn3(O2CCH3)6(3apy)2(H2O)2][Zn_3(O_2CCH_3)_6(3- apy)_2(H_2O)_2](1). The molecules consists of two terminal ZnZn atoms, coordinated tetrahedrally, and one central ZnZn atom, coordinated octahedrally. Colourless crystals, obtained by the reaction of Zn(CH3COO)2Zn(CH_3COO)_2 · 2H2O2H_2O with 4-aminopyridine (4-apy), consist of a mononuclear complex [Zn(O2CCH3)2(4apy)2][Zn(O_2CCH_3)_2(4-apy)_2](2). Hydrogen-bonding interactions in the crystal structures of both complexes are reported.Sintetizirali in karakterizirali smo novi cinkovi koordinacijski spojini s 3- in 4-aminopiridinom. Dobili smo ju z dodajanjem metanolne raztopine Zn(CH3COO)2Zn(CH_3COO)_2 · 2H2O2H_2O v vodno raztopino 3-aminopiridina oziroma raztapljanjem Zn(CH3COO)2Zn(CH_3COO)_2 · 2H2O2H_2O v metanolni raztopini 4-aminopiridina. Produkta sta bila okarakterizirana z rentgensko strukturno analizo monokristalov. Brezbarvni kristali, pridobljeni z reakcijo med Zn(CH3COO)2Zn(CH_3COO)_2 · 2H2O2H_2O in 3-aminopiridinom, so zgrajeni iz trijedrnih koordinacijskih molekul s kemijsko formulo [Zn3(O2CCH3)6(3apy)2(H2O)2][Zn_3(O_2CCH_3)_6(3-apy)_2(H_2O)_2](1). Molekula je sestavljena iz dveh terminalnih cinkovih ionov, ki sta tetraedično koordinirana, in enega centralnega iona, ki je oktaedrično koordiniran. Brezbarvni kristali, dobljeni z reakcijo med Zn(CH3COO)2Zn(CH_3COO)_2 · 2H2O2H2_O in 4-aminopiridinom, sestojijo iz enojedrnih koordinacijskih molekul s kemijsko formulo [Zn(O2CCH3)2(4apy)2][Zn(O_2CCH_3)_2(4-apy)_2](2). Poročamo tudi o vodikovih vezeh v kristalnih strukturah obeh spojin

    Bedside Shift Report: A Way to Improve Patient and Family Satisfaction with Nursing Care

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    Poor communication during the handoff process contributes to approximately 30% of malpractice claims costing up to $1.3 billion annually (Fenner, 2017), which demonstrates the importance of evaluating the quality of information exchange between nurses, patients, and families when associating quality of care to patient satisfaction (Kullberg et al.,2017). The following question guided this Evidence-Based Project (EBP) project. In adult, progressive care unit patients (P), does the implementation of a nursing bedside handoff (I) compared to current handoff practices (C) improve patient/family satisfaction with nursing care (O) over eight weeks (T)? The literature revealed evidence from 10 studies answering the practice problem and supported implementing a Bedside Handoff (BSH) bundle. Themes from the evidence included patient and family participation in care, bedside handoff and impact on patient and family satisfaction, nursing perceptions associated with bedside handoff process, and measuring patient and family satisfaction with nursing care. The BSH bundle included staff education, utilization of a standardized handoff communication tool, safety checks, and use of patient whiteboards. Direct observation occurred to understand staff compliance using the Handoff Observation Feedback Audit Tool. The project demonstrated that bundling evidence-based practices improved specific nursing care aspects that influence the patient and staff experiences and satisfaction survey results

    CCDC 2110387: Experimental Crystal Structure Determination. Crystallographic data for: "Cu(II), Mn(II) and Zn(II) complexes of hydrazones with a quaternary ammonium moiety: synthesis, experimental and theoretical characterization and cytotoxic activity"

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    NAMYOT : bis(μ-azido)-diazido-bis[2-oxy-N,N,N-trimethyl-2-{[1-(1,3-thiazol-2-yl)ethylidene]hydrazinylidene}ethan-1-aminium]-di-manganese methanol solvate Space Group: P 1 (2), Cell: a 9.6427(5)Å b 10.8396(5)Å c 10.8617(8)Å, α 106.971(5)° β 103.497(5)° γ 112.469(5)°Supporting information: [https://cer.ihtm.bg.ac.rs/handle/123456789/4902]Published article: [https://cer.ihtm.bg.ac.rs/handle/123456789/4901]Crystallographic data (CCDC 2110387) for the article: Stevanović, Nevena, Zlatar, Matija, Novaković, Irena, Pevec, Andrej, Radanović, Dušanka, Matić, Ivana Z., Đorđić Crnogorac, Marija, Stanojković, Tatjana, Vujčić, Miroslava, Gruden, Maja, Sladić, Dušan, Anđelković, Katarina, Turel, Iztok, Čobeljić, Božidar, "Cu(II), Mn(II) and Zn(II) complexes of hydrazones with a quaternary ammonium moiety: synthesis, experimental and theoretical characterization and cytotoxic activity" in Dalton Transactions, 51, no. 1 (2022):185-196, [https://doi.org/10.1039/D1DT03169D]Related crystallographic data (CCDC 2110386): [https://cer.ihtm.bg.ac.rs/handle/123456789/4903]Related crystallographic data (CCDC 2110388): [https://cer.ihtm.bg.ac.rs/handle/123456789/4905

    CCDC 1917721: Experimental Crystal Structure Determination. Crystalographic data for "What Is the Nature of Interactions of BF4–, NO3–, and ClO4– to Cu(II) Complexes with Girard’s T Hydrazine? When Can Binuclear Complexes Be Formed?"

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    HOSCIE : (N-[1-(pyridin-2-yl)ethylidene]-2-(trimethylazaniumyl)ethanehydrazonate)-chloro-tetrafluoroborato-copper(ii) Space Group: P 21/c (14), Cell: a 9.9440(4)Å b 9.3620(4)Å c 18.5299(7)Å, α 90° β 95.626(3)° γ 90°Crystallographic data (CCDC 1917721) for: Keškić, T., Čobeljić, B., Gruden, M., Anđelković, K., Pevec, A., Turel, I., Radanović, D.,& Zlatar, M. (2019). What Is the Nature of Interactions of BF4–, NO3–, and ClO4– to Cu(II) Complexes with Girard’s T Hydrazine? When Can Binuclear Complexes Be Formed?. Crystal Growth & Design, American Chemical Society (ACS)., 19, 4810-4821. [https://doi.org/10.1021/acs.cgd.9b00760]The published version of the article: [https://cer.ihtm.bg.ac.rs/handle/123456789/3051]The peer-reviewed version of the article: [https://cer.ihtm.bg.ac.rs/handle/123456789/3047]Supporting information: [https://cer.ihtm.bg.ac.rs/handle/123456789/4460]Related crystallographic data (CCDC 1917722): [https://cer.ihtm.bg.ac.rs/handle/123456789/4462]Related crystallographic data (CCDC 1917723): [https://cer.ihtm.bg.ac.rs/handle/123456789/4463

    CCDC 1917723: Experimental Crystal Structure Determination. Crystalographic data for "What Is the Nature of Interactions of BF4–, NO3–, and ClO4– to Cu(II) Complexes with Girard’s T Hydrazine? When Can Binuclear Complexes Be Formed?"

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    HOSCUQ : bis(μ-chloro)-bis(N-[1-(pyridin-2-yl)ethylidene]-2-(trimethylazaniumyl)ethanehydrazonate)-di-copper(iii) bis(tetrafluoroborate) Space Group: P 21/n (14), Cell: a 7.2915(3)Å b 28.1816(13)Å c 8.9402(5)Å, α 90° β 112.196(6)° γ 90°Crystallographic data (CCDC 1917723) for: Keškić, T., Čobeljić, B., Gruden, M., Anđelković, K., Pevec, A., Turel, I., Radanović, D.,& Zlatar, M. (2019). What Is the Nature of Interactions of BF4–, NO3–, and ClO4– to Cu(II) Complexes with Girard’s T Hydrazine? When Can Binuclear Complexes Be Formed?. Crystal Growth & Design, American Chemical Society (ACS)., 19, 4810-4821. [https://doi.org/10.1021/acs.cgd.9b00760]The published version of the article: [https://cer.ihtm.bg.ac.rs/handle/123456789/3051]The peer-reviewed version of the article: [https://cer.ihtm.bg.ac.rs/handle/123456789/3047]Supporting information: [https://cer.ihtm.bg.ac.rs/handle/123456789/4460]Related crystallographic data (CCDC 1917721): [https://cer.ihtm.bg.ac.rs/handle/123456789/4461]Related crystallographic data (CCDC 1917722): [https://cer.ihtm.bg.ac.rs/handle/123456789/4462

    Nonlinear fiber-optic strain sensor based on four-wave mixing in microstructured optical fiber

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    We demonstrate a nonlinear fiber-optic strain sensor, which uses the shifts of four-wave mixing Stokes and anti-Stokes peaks caused by the strain-induced changes in the structure and refractive index of a microstructured optical fiber. The sensor thus uses the inherent nonlinearity of the fiber and does not require any advanced post-processing of the fiber. Strain sensitivity of -0.23 pm/mu epsilon is achieved experimentally and numerical simulations reveal that for the present fiber the sensitivity can be increased to -4.46 pm/mu epsilon by optimizing the pump wavelength and power. (C) 2012 Optical Society of Americ

    CCDC 2110386: Experimental Crystal Structure Determination. Crystallographic data for: "Cu(II), Mn(II) and Zn(II) complexes of hydrazones with a quaternary ammonium moiety: synthesis, experimental and theoretical characterization and cytotoxic activity"

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    NAMYIN : azido-[2-oxy-N,N,N-trimethyl-2-{[1-(1,3-thiazol-2-yl)ethylidene]hydrazinylidene}ethan-1-aminium]-(methanol)-copper tetrafluoroborate Space Group: P 21/n (14), Cell: a 7.0033(3)Å b 10.8941(3)Å c 25.6059(9)Å, α 90° β 97.242(4)° γ 90°Supporting information: [https://cer.ihtm.bg.ac.rs/handle/123456789/4902]Published article: [https://cer.ihtm.bg.ac.rs/handle/123456789/4901]Crystallographic data (CCDC 2110386) for the article: Stevanović, Nevena, Zlatar, Matija, Novaković, Irena, Pevec, Andrej, Radanović, Dušanka, Matić, Ivana Z., Đorđić Crnogorac, Marija, Stanojković, Tatjana, Vujčić, Miroslava, Gruden, Maja, Sladić, Dušan, Anđelković, Katarina, Turel, Iztok, Čobeljić, Božidar, "Cu(II), Mn(II) and Zn(II) complexes of hydrazones with a quaternary ammonium moiety: synthesis, experimental and theoretical characterization and cytotoxic activity" in Dalton Transactions, 51, no. 1 (2022):185-196, [https://doi.org/10.1039/D1DT03169D]Related crystallographic data (CCDC 2110387): [https://cer.ihtm.bg.ac.rs/handle/123456789/4904]Related crystallographic data (CCDC 2110388): [https://cer.ihtm.bg.ac.rs/handle/123456789/4905

    CCDC 1917722: Experimental Crystal Structure Determination. Crystalographic data for "What Is the Nature of Interactions of BF4–, NO3–, and ClO4– to Cu(II) Complexes with Girard’s T Hydrazine? When Can Binuclear Complexes Be Formed?"

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    HOSCOK : (N-[1-(pyridin-2-yl)ethylidene]-2-(trimethylazaniumyl)ethanehydrazonate)-nitrato-chloro-copper(ii) Space Group: P 21/c (14), Cell: a 10.1820(6)Å b 8.6362(6)Å c 18.7170(11)Å, α 90° β 95.178(5)° γ 90°Crystallographic data (CCDC 1917722) for: Keškić, T., Čobeljić, B., Gruden, M., Anđelković, K., Pevec, A., Turel, I., Radanović, D.,& Zlatar, M. (2019). What Is the Nature of Interactions of BF4–, NO3–, and ClO4– to Cu(II) Complexes with Girard’s T Hydrazine? When Can Binuclear Complexes Be Formed?. Crystal Growth & Design, American Chemical Society (ACS)., 19, 4810-4821. [https://doi.org/10.1021/acs.cgd.9b00760]The published version of the article: [https://cer.ihtm.bg.ac.rs/handle/123456789/3051]The peer-reviewed version of the article: [https://cer.ihtm.bg.ac.rs/handle/123456789/3047]Supporting information: [https://cer.ihtm.bg.ac.rs/handle/123456789/4460]Related crystallographic data (CCDC 1917721): [https://cer.ihtm.bg.ac.rs/handle/123456789/4461]Related crystallographic data (CCDC 1917723): [https://cer.ihtm.bg.ac.rs/handle/123456789/4463
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