cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.48370/ofd/xsmnae
title: Myodes glareolus - 33331, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1963-09-06, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/nprsfv
title: Myodes glareolus - 8328, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-05-29, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/ol8qwl
title: Myodes glareolus - 148762, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1983-09-23, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/ppatlu
title: Myodes glareolus - 148997, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1983-10-10, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/opq2ry
title: Myodes glareolus - 12529, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-08-12, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/lwtnn3
title: Myodes glareolus - 162986, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1993-09-29, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/rlptln
title: Myodes glareolus - 17953, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1957-03-27, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/wpp0zt
title: Myodes glareolus - 54362, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1966-09-09, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/oy3yck
title: Myodes glareolus - 30791, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1962-10-20, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/a1usec
title: Myodes glareolus - 153160, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1986-07-26, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/kfykzb
title: Myodes glareolus - 155108, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1987-05-27, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/leif3l
title: Myodes glareolus - 44368, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1965-07-02, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/3lgwae
title: Myodes glareolus - 21041, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1959-04-20, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/izwzme
title: Myodes glareolus - 10525, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-07-12, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/q2p13j
title: Myodes glareolus - 11159, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-07-20, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/7wviiw
title: Myodes glareolus - 147054, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1983-07-12, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/iza0iu
title: Myodes glareolus - 168036, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 2001-09-19, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/xk1xdj
title: Myodes glareolus - 162138, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1992-07-12, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/hck4yj
title: Myodes glareolus - 124571, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1977-07-10, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/ngrb4j
title: Myodes glareolus - 14441, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-09-19, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/jd24hl
title: Myodes glareolus - 155778, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1987-09-16, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/jfcpd8
title: Myodes glareolus - 155920, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1987-09-27, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/sqtvnu
title: Myodes glareolus - 19365, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1957-12-08, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/zprgru
title: Myodes glareolus - 155823, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1987-09-19, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/vjoq3d
title: Myodes glareolus - 43021, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1965-04-30, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/s0jn6d
title: Myodes glareolus - 163347, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1994-07-19, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/sg835d
title: Myodes glareolus - 19791, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1958-01-29, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/dyi4gi
title: Myodes glareolus - 2640, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1953-07-27, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/cl78el
title: Myodes glareolus - 45698, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1965-09-07, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/choxi0
title: Myodes glareolus - 13902, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-09-11, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/bwn3gc
title: Myodes glareolus - 17427, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1956-09-18, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/a07cqu
title: Myodes glareolus - 24272, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1961-04-08, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/tce6m7
title: Myodes glareolus - 104829, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1972-05-29, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/8y3fnn
title: Myodes glareolus - 72252, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1968-03-20, in: Białowieża National Park, Poland. Material type:
DOI: 10.6084/m9.figshare.12962511
title: Sequential One-Pot Synthesis of 2-Aminothiazoles Using Corresponding Ketones: Insights into Their Structural Features

description: 2-Aminothiazoles have been synthesized by a one-pot, two-step sequential procedure in solution state which does not involve the isolation of intermediates. It involves α-halogenation of corresponding precursor ketones followed by condensation with substituted thiourea derivatives. All the products were analyzed by IR, NMR, mass spectral techniques and four of them were evaluated crystallographically. One of them crystallizes in the triclinic crystal system with space group <i>P</i>1¯, while, all the other compounds crystallize in the monoclinic crystal system in two different space groups <i>viz. P</i>2<sub>1</sub>/c and <i>P</i>2<sub>1</sub>/n. The modified 2-aminothiazole core did not show any change in the intermolecular interaction. The N-H…N interaction predominates over other interactions forming centrosymmetric head to head dimer with the neighboring atoms. This feature is observed in all the molecules except <i>N</i>-(4-(4-bromophenyl)-3-(2,5-dimethylphenyl)thiazol-2(3<i>H</i>)-ylidene)-2,5-dimethylaniline.
DOI: 10.6084/m9.figshare.12962511.v1
title: Sequential One-Pot Synthesis of 2-Aminothiazoles Using Corresponding Ketones: Insights into Their Structural Features

description: 2-Aminothiazoles have been synthesized by a one-pot, two-step sequential procedure in solution state which does not involve the isolation of intermediates. It involves α-halogenation of corresponding precursor ketones followed by condensation with substituted thiourea derivatives. All the products were analyzed by IR, NMR, mass spectral techniques and four of them were evaluated crystallographically. One of them crystallizes in the triclinic crystal system with space group <i>P</i>1¯, while, all the other compounds crystallize in the monoclinic crystal system in two different space groups <i>viz. P</i>2<sub>1</sub>/c and <i>P</i>2<sub>1</sub>/n. The modified 2-aminothiazole core did not show any change in the intermolecular interaction. The N-H…N interaction predominates over other interactions forming centrosymmetric head to head dimer with the neighboring atoms. This feature is observed in all the molecules except <i>N</i>-(4-(4-bromophenyl)-3-(2,5-dimethylphenyl)thiazol-2(3<i>H</i>)-ylidene)-2,5-dimethylaniline.
DOI: 10.6084/m9.figshare.12389225
title: Synthesis of Novel Pyrazolyl-1,3,4-Thiadiazole Analogues

description: In the present study, we have designed a novel series of pyrazolyl-1,3,4-thiadiazole analogues by accommodating 1,3,4-thiadiazole ring at C – 4 of pyrazole ring with and without an amide linkage; 5-methyl-1,3-diphenyl-<i>N</i>-(5-phenyl-1,3,4-thiadiazol-2-yl)-1<i>H</i>-pyrazole-4-carboxamide and 2-(5-methyl-1,3-diphenyl-1<i>H</i>-pyrazol-4-yl)-5-phenyl-1,3,4-thiadiazole respectively. We have designed this class of heterocycles by keeping a wide audience in mind, which augment their scientific knowledge. Newly synthesized compounds were characterized by <sup>1</sup>H NMR, <sup>13</sup>C NMR, mass, IR spectral studies. Single crystal X-ray analysis of some compounds also gave insight into the structural information.
DOI: 10.6084/m9.figshare.12389225.v1
title: Synthesis of Novel Pyrazolyl-1,3,4-Thiadiazole Analogues

description: In the present study, we have designed a novel series of pyrazolyl-1,3,4-thiadiazole analogues by accommodating 1,3,4-thiadiazole ring at C – 4 of pyrazole ring with and without an amide linkage; 5-methyl-1,3-diphenyl-<i>N</i>-(5-phenyl-1,3,4-thiadiazol-2-yl)-1<i>H</i>-pyrazole-4-carboxamide and 2-(5-methyl-1,3-diphenyl-1<i>H</i>-pyrazol-4-yl)-5-phenyl-1,3,4-thiadiazole respectively. We have designed this class of heterocycles by keeping a wide audience in mind, which augment their scientific knowledge. Newly synthesized compounds were characterized by <sup>1</sup>H NMR, <sup>13</sup>C NMR, mass, IR spectral studies. Single crystal X-ray analysis of some compounds also gave insight into the structural information.
DOI: 10.48370/ofd/lgl4wq
title: Myodes glareolus - 46728, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1965-10-07, in: Białowieża National Park, Poland. Material type:
DOI: 10.6084/m9.figshare.12937516.v1
title: A Simple and Efficient One-Pot Route for the Synthesis of 3-[1-Aryl(Alkyl)-2-Pyridin-2-yl-Ethyl]-4-Hydroxy-6-Methyl-2H-Pyran-2-Ones under Catalyst-Free Conditions

description: Reaction between 4-hydroxy-6-methyl-2H-pyran-2-one and aldehydes with 2-methylpyridine in dioxane under catalyst-free conditions provided a simple and efficient one-pot route for the synthesis of 3-[1-aryl(alkyl)-2-pyridin-2-yl-ethyl]-4-hydroxy-6-methyl-2H-pyran-2-ones. The reaction is characterized by inexpensive and easily available starting materials, the formation of a single product, high yields of biologically active products, and a simple work-up process.
DOI: 10.6084/m9.figshare.12937516
title: A Simple and Efficient One-Pot Route for the Synthesis of 3-[1-Aryl(Alkyl)-2-Pyridin-2-yl-Ethyl]-4-Hydroxy-6-Methyl-2H-Pyran-2-Ones under Catalyst-Free Conditions

description: Reaction between 4-hydroxy-6-methyl-2H-pyran-2-one and aldehydes with 2-methylpyridine in dioxane under catalyst-free conditions provided a simple and efficient one-pot route for the synthesis of 3-[1-aryl(alkyl)-2-pyridin-2-yl-ethyl]-4-hydroxy-6-methyl-2H-pyran-2-ones. The reaction is characterized by inexpensive and easily available starting materials, the formation of a single product, high yields of biologically active products, and a simple work-up process.
DOI: 10.48370/ofd/pfelam
title: Myodes glareolus - 65734, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1967-10-05, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/yitdrn
title: Myodes glareolus - 165668, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1997-04-20, in: Białowieża National Park, Poland. Material type:
DOI: 10.6084/m9.figshare.12436049.v1
title: Detailed Electronic Structure, Physico-Chemical Properties, Excited State Properties, Virtual Bioactivity Screening and SERS Analysis of Three Guanine Based Antiviral Drugs Valacyclovir HCl Hydrate, Acyclovir and Ganciclovir

description: Valacyclovir HCl hydrate, acyclovir and ganciclovir are three commonly used anti viral drugs which are guanidine derivatives with ether side chain and all of them act by interfering with the viral DNA production. This manuscript tries to examine the structure and properties of these three purine based compounds using electronic structure methods and molecular mechanics. Density functional theory was used to optimize the ground state geometry of the molecules from frontier molecular orbitals are analyzed using B3LYP functional. They give wealth of information about the electronic properties and descriptors, which will enable to predict the bioactivity of the molecules. As the electrons interact with electromagnetic radiations, electronic excitations between different energy levels are analyzed in detail using TD-DFT with CAM-B3LYP orbital. Calculations shows that they are with excellent light-harvesting efficiency hence be used as photo sensitizers. Molecular docking studies predict the biological activity of the molecules against ADP-thymidine kinase, hence inhibits its action, subsequently affecting the viral DNA production. It is interesting to see that on adsorption with a graphene quantum dot surface, all adsorbed complex show enhancement in the Raman activity giving Surface Enhanced Raman Spectra (SERS) when studied using dispersion force corrected ω-B97XD functional. This can be used for the detection of these drugs in a pharmacological or biological sample. Interestingly the graphene drug molecular assembly shows enhanced biological activity when compared to individual drug molecules.
DOI: 10.48370/ofd/feqgtb
title: Myodes glareolus - 162340, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1992-09-25, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/mcrlsx
title: Myodes glareolus - 3348, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1953-08-24, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/iv4uja
title: Myodes glareolus - 138849, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1981-07-07, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/lhr68n
title: Myodes glareolus - 28997, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1962-09-04, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/inuc58
title: Myodes glareolus - 10811, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-07-15, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/4hfrki
title: Myodes glareolus - 163484, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1994-09-18, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/utbtfh
title: Myodes glareolus - 90748, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1970-05-20, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/x2c9qt
title: Myodes glareolus - 12983, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-08-25, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/vfezl9
title: Myodes glareolus - 22376, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1959-06-23, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/dc2lxd
title: Myodes glareolus - 9206, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-06-21, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/zk7k5h
title: Myodes glareolus - 35713, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1964-06-19, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/ffjdnx
title: Myodes glareolus - 13594, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-09-05, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/mcv8zr
title: Myodes glareolus - 159682, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1990-07-09, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/buflhr
title: Myodes glareolus - 15687, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-11-09, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/64klhb
title: Myodes glareolus - 133404, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1979-09-17, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/ssz3tq
title: Myodes glareolus - 164125, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1996-05-06, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/3du7yv
title: Myodes glareolus - 138607, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1981-05-12, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/mepdgh
title: Myodes glareolus - 9044, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-06-16, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/lb3rsl
title: Myodes glareolus - 159828, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1990-07-19, in: Białowieża National Park, Poland. Material type: