دانلود مقالات ISI درباره Pts + ترجمه فارسی

Pan-genomic approach shows insight of genetic divergence and pathogenic-adaptation of Pasteurella multocida

Keywords: BRIG; BLAST Ring Image Generator; CDSs; Coding sequences; COG; Clusters of Orthologous Groups database; GC-content; Guanine-cytosine content; GEIs; Genomic islands; GIPSy; Genomic Island Prediction Software; HGT; Horizontal gene transfer; HS; Hemorrhagic

دانلود رایگان متن کامل مقاله ISI 35 صفحه سال انتشار : 2018 سفارش ترجمه

Immunometabolic regulation by triterpenes of Eucalyptus tereticornis in adipose tissue cell line models

Keywords: Obesity; Inflammation; Adipose tissue; Natural products; Triterpenes; PPARγ; Peroxisome proliferator-activated receptor gamma; C/EBPα; CCAAT-enhancer-binding proteins; IL-6; Interleukin 6; IL-1β; Interleukin 1β; TNFα; Tumoral necrosis factor alpha; M

دانلود رایگان متن کامل مقاله ISI 37 صفحه سال انتشار : 2018 سفارش ترجمه

Genetic and metabolic engineering for microbial production of poly-γ-glutamic acid

Keywords: Biopolymers; Glutamic acid; Pathway engineering; Poly-γ-glutamic acid; Recombinant producers; AI-2; autoinducer AI-2; AmtB; ammonium transporter; CscB; sucrose permease; CodY; a global regulator protein; CwlO; cell wall d/l-endopeptidase; d-AAT; d-amino

دانلود رایگان متن کامل مقاله ISI 39 صفحه سال انتشار : 2018 سفارش ترجمه

Building-integrated solar thermal system with/without phase change material: Life cycle assessment based on ReCiPe, USEtox and Ecological footprint

Keywords: Life cycle assessment (LCA); Building-integrated solar thermal (BIST) system; Phase change material (PCM); ReCiPe midpoint/endpoint; USEtox (human toxicity, ecotoxicity); Ecological footprint; BA; Building-added; BI; Building-integrated; BIST; Building-in

دانلود رایگان متن کامل مقاله ISI 39 صفحه سال انتشار : 2018 سفارش ترجمه

Facilitating effects of Buyang Huanwu decoction on axonal regeneration after peripheral nerve transection

Keywords: BYHWD; Buyang Huanwu decoction; DRG; dorsal root ganglion; NTC; Nerve transection and coaptation; PTSC; post transection and coaptation; PC; post coaptation; PTS; post transection; Cdc2; cell division cycle 2; DRG; dorsal root ganglion; Buyang Huanwu deco

دانلود رایگان متن کامل مقاله ISI 40 صفحه سال انتشار : 2018 سفارش ترجمه

Disruption of peroxisome function leads to metabolic stress, mTOR inhibition, and lethality in liver cancer cells

Keywords: Peroxisome; Peroxisomal biogenesis factor 2; Mammalian target of rapamycin complex 1; Metabolic stress; Human hepatocellular carcinoma; PEXs; peroxins; PTS; peroxisome targeting signal; PBD; peroxisome biogenesis disorder; ZS; Zellweger syndrome; HCC; hum

دانلود رایگان متن کامل مقاله ISI 42 صفحه سال انتشار : 2018 سفارش ترجمه

Metabolic engineering of mevalonate-producing Escherichia coli strains based on thermodynamic analysis

Keywords: 2PG; 2-phosphoglycerate; 3PG; 3-phosphoglycerate; 6PG; 6-phosphogluconate; 6PGDH; 6-phosphogluconate dehydrogenase; 6PGL; 6-phosphogluconolactonase; AcCoA; acetyl coenzyme A; ACO; cis-aconitate; AKG; α-ketoglutarate; CIT; citrate; CoA; coenzyme A; DHAP;

دانلود رایگان متن کامل مقاله ISI 43 صفحه سال انتشار : 2018 سفارش ترجمه

The histidine phosphocarrier protein, HPr, binds to the highly thermostable regulator of sigma D protein, Rsd, and its isolated helical fragments

Keywords: Binding; Circular dichroism; Fluorescence; Histidine-phosphocarrier-protein; Isothermal titration calorimetry; NMR; Thermostability; ANS; 8-naphthalene-1-sulfonic acid; ASA; accessible surface area; BLI; biolayer interferometry; CD; circular dichroism; DL

دانلود رایگان متن کامل مقاله ISI 52 صفحه سال انتشار : 2018 سفارش ترجمه

Meiotic development initiation in the fungus Podospora anserina requires the peroxisome receptor export machinery

Keywords: MCC; Manders' correlation coefficient; PCC; Pearson's correlation coefficient; PMP; peroxisome membrane protein; PTS; Peroxisomal-targeting signal; ROS; reactive oxygen species; Peroxisome; Meiosis; Sexual development; Fungi; Organelle biogenesis;

دانلود رایگان متن کامل مقاله ISI 59 صفحه سال انتشار : 2018 سفارش ترجمه

Difference distance map data of alternative crystal forms of UlaA

Keywords: C2A, P21A; Space group names; APC; Amino acid-Polyamine organoCation superfamily of secondary carriers; PTS; Bacterial Phospho-Transferase System; NMA; Normal Mode Analysis;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2017 سفارش ترجمه

A Pb-TLD spectrometer to measure high energy photons in z-pinch experiments on the primary test stand

Keywords: Pb-TLD spectrometer; Attenuation technique; High energy photons; PTS;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2017 سفارش ترجمه

Improved fiber nonlinearity mitigation in dispersion managed optical OFDM links

Keywords: Fiber nonlinearity; PAPR; SLM; PTS; L2-by-3; Phase noise;

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2017 سفارش ترجمه

Endovascular Management of May-Thurner Syndrome in Adolescents: A Single-Center Experience

Keywords: DVT; deep vein thrombosis; MTS; May-Thurner syndrome; PTS; postthrombotic syndrome;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2017 سفارش ترجمه

Prognostic correlation of cell cycle progression score and Ki-67 as a predictor of aggressiveness, biochemical failure, and mortality in men with high-risk prostate cancer treated with external beam radiation therapy

Keywords: pts; patients; IHC; immunohistochemical; HE; hematoxylin and eosin; CCP; cell cycle progression; ADT; androgen deprivation therapy; FFbF; freedom from biochemical failure; OS; overall survival; GU; genitourinary; GI; gastrointestinal; CTCv3.0; common term

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2017 سفارش ترجمه

A single metabolite production by Escherichia coli BW25113 and its pflA.cra mutant cultivated under microaerobic conditions using glycerol or glucose as a carbon source

Keywords: AcCoA; acetyl-coenzyme A; ATP; adenosine triphosphate; cAMP; cyclic adenosine monophosphate; cAMP-Crp; cAMP receptor protein; DCW; dry cell weight; DHA; dihydroxyacetone; GAPDH; -glyceraldehyde-3-phosphate dehydrogenase; GDH; glutamate dehydrogenase; KH2P

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2017 سفارش ترجمه

A novel reduced complexity optimized PTS technique for PAPR reduction in wireless OFDM systems

Keywords: OFDM; PAPR; CCDF; PTS; CCRR;

دانلود رایگان متن کامل مقاله ISI 9 صفحه سال انتشار : 2017 سفارش ترجمه

Inhibition of stress induced premature senescence in presenilin-1 mutated cells with water soluble Coenzyme Q10

Keywords: Aβ; amyloid-beta peptide; AD; Alzheimer's disease; APP; amyloid precursor protein; CoQ10; Coenzyme Q10; DCF; 2′,7′-dichlorofluorescein; DIC; differential interference contrast; H2DCFDA; 2′-7′-dichlorofluorescin diacetate; HBSS; Hank's Balanced Sa

دانلود رایگان متن کامل مقاله ISI 10 صفحه سال انتشار : 2017 سفارش ترجمه

A novel 3D approach for determination of frontal and coronal plane tibial slopes from MR imaging

Keywords: ACL; anterior cruciate ligament; AP; anterior-posterior; CRA; coronal reference axis; CRP; coronal reference plane; CT; computed topography; CTS; coronal tibial slope; LTS; lateral tibial slope; ML; medial-lateral; MRI; magnetic resonance image; MTS; me

دانلود رایگان متن کامل مقاله ISI 10 صفحه سال انتشار : 2017 سفارش ترجمه

Coenzyme Q10 protects against statin-induced myotoxicity in zebrafish larvae (Danio rerio)

Keywords: ATV; Atorvastatin; EM; embryo medium; HMGCR; 3-hydroxy-3-methylglutaryl-CoA reductase; hpf; hours post-fertilization; PTS; polyoxyethanyl-α-tocopheryl sebacate; Zebrafish; Larvae; CoQ10; Myotoxicity; Muscle atrophy; Mitochondria;

دانلود رایگان متن کامل مقاله ISI 11 صفحه سال انتشار : 2017 سفارش ترجمه

Immune defects caused by mutations in the ubiquitin system

Keywords: Ubiquitin; nuclear factor κB; immunodeficiency; CVID; Common variable immunodeficiency; DUB; Deubiquitinating enzyme; EDA-ID; Ectodermal dysplasia with immunodeficiency; HECT; Homologous to EGAP C-terminus; HOIL-1; Heme-oxidase iron responsive element bi

دانلود رایگان متن کامل مقاله ISI 11 صفحه سال انتشار : 2017 سفارش ترجمه

Use of polymer conjugates for the intraperoxisomal delivery of engineered human alanine:glyoxylate aminotransferase as a protein therapy for primary hyperoxaluria type I

Keywords: Protein therapeutics; Polymer conjugates; Primary hyperoxaluria; Rare disease; Peroxisomal targeting; Enzyme administration; PH1; primary hyperoxaluria type I; AGT; alanine:glyoxylate aminotransferase; PLP; pyridoxal 5′-phosphate; PTS; peroxisomal targe

دانلود رایگان متن کامل مقاله ISI 11 صفحه سال انتشار : 2017 سفارش ترجمه

Numerical modelling of a direct contact condensation experiment using the AIAD framework

Keywords: CFD; CMFD; Horizontal flow; PTS; PWR; AIAD; DCC; Two-phase flow; Two fluid flow;

دانلود رایگان متن کامل مقاله ISI 12 صفحه سال انتشار : 2017 سفارش ترجمه

Discovery of pentacyclic triterpene 3β-ester derivatives as a new class of cholesterol ester transfer protein inhibitors

Keywords: CETP inhibitor; Pentacyclic triterpenes; Non-HDL-C; Dyslipidemia; CVDs; cardiovascular diseases; CETP; cholesteryl ester transfer protein; HDL-C; high density lipoprotein-cholesterol; LDL-C; low density lipoprotein-cholesterol; VLDL; very-low-density lipo

دانلود رایگان متن کامل مقاله ISI 13 صفحه سال انتشار : 2017 سفارش ترجمه

Cellulosic biobutanol by Clostridia: Challenges and improvements

Keywords: ABE; acetone-butanol-ethanol; HMF; Hydroxymethyl furfural; PTS; Phosphoenolpyruvate (PEP)-dependent phosphotransferase system; SHF; Separate hydrolysis and fermentation; SHFR; Separate hydrolysis and fermentation with in-situ recovery; SSF,; Simultaneous

دانلود رایگان متن کامل مقاله ISI 14 صفحه سال انتشار : 2017 سفارش ترجمه

Electron crystallography reveals that substrate release from the PTS IIC glucose transporter is coupled to a subtle conformational change

Keywords: HP; hairpin; IQ; intensity quotient; PSV; projection structure visualization; PTS; phosphotransferase system; SPA; scintillation proximity assay; TC; transporter classification; TM; transmembrane; Electron crystallography; Glucose transporter; Membrane pr

دانلود رایگان متن کامل مقاله ISI 25 صفحه سال انتشار : 2017 سفارش ترجمه

Analysis of the in vitro and in vivo effects of photodynamic therapy on prostate cancer by using new photosensitizers, protoporphyrin IX-polyamine derivatives

Keywords: PDT; photodynamic therapy; PS; photosensitizer; PpIX; protoporphyrin IX; PpIX-dSd; protoporphyrin IX with two spermidines; PpIX-dSm; protoporphyrin IX with two spermines; PA; polyamine; PpIX-PA; protoporphyrin IX with polyamines; ROS; reactive oxygen spec

دانلود رایگان متن کامل مقاله ISI 35 صفحه سال انتشار : 2017 سفارش ترجمه

Phytol-induced pathology in 2-hydroxyacyl-CoA lyase (HACL1) deficient mice. Evidence for a second non-HACL1-related lyase

Keywords: 2OH-FA; 2-hydroxy fatty acid; ARD; adult Refsum disease; CNS; central nervous system; DEXA; dual energy X-ray absorptiometry; ER; endoplasmic reticulum; GC; gas chromatography; KO; knockout; LC; liquid chromatography; MEF; mouse embryonic fibroblasts; MFP

دانلود رایگان متن کامل مقاله ISI 56 صفحه سال انتشار : 2017 سفارش ترجمه

Intracranial response to nivolumab in NSCLC patients with untreated or progressing CNS metastases

Keywords: CNS; central nervous system; K-RAS; Kirsten rat sarcoma; mRECIST; modified Response Evaluation Criteria in Solid Tumors; MRI; magnetic resonance imaging; NSCLC; non-small cell lung cancer; pts; patients; PET-CT; positron emission tomography-computer tomog

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2016 سفارش ترجمه

The V-motifs facilitate the substrate capturing step of the PTS elevator mechanism

Keywords: C2A, P21A; space group names; APC; Amino acid-Polyamine organoCation superfamily of secondary carriers; PTS; bacterial Phospho-Transferase System; NMA; Normal Mode Analysis;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2016 سفارش ترجمه

De novo peroxisome biogenesis: Evolving concepts and conundrums

Keywords: aa; amino acids; ARF1; ADP-ribosylation-factor 1; APX; ascorbate peroxidase; BFA; brefeldin A; BY-2; bright yellow-2; COP; coatomer protein; ER; endoplasmic reticulum; ERES; endoplasmic reticulum exit sites; ERPIC; ER-peroxisome intermediate compartment;

دانلود رایگان متن کامل مقاله ISI 10 صفحه سال انتشار : 2016 سفارش ترجمه

Targeting and insertion of peroxisomal membrane proteins: ER trafficking versus direct delivery to peroxisomes

Keywords: APX; Ascorbate peroxidase; ER; Endoplasmic reticulum; Get; Guided entry of TA proteins; PBD; Peroxisomal biogenesis disorder; PMPs; Peroxisomal membrane proteins; PTS; Peroxisomal targeting signals; RNC; Ribosome nascent chain complex; SRP; Signal recogni

دانلود رایگان متن کامل مقاله ISI 11 صفحه سال انتشار : 2016 سفارش ترجمه

Genomic characterization of a fructophilic bee symbiont Lactobacillus kunkeei reveals its niche-specific adaptation

Keywords: LAB; lactic acid bacteria; FLAB; fructophilic lactic acid bacteria; CDS; protein coding sequences; COG; Clusters of Orthologous Groups; KO; KEGG Orthology; KAAS; KEGG Automatic Annotation Server; PTS; phosphotransferase system; Lactobacillus kunkeei; Comp

دانلود رایگان متن کامل مقاله ISI 11 صفحه سال انتشار : 2016 سفارش ترجمه

A role for mRNA trafficking and localized translation in peroxisome biogenesis and function?

Keywords: ChIP; chromatin immunoprecipitation; CLIP; crosslinking immunoprecipitation; ER; endoplasmic reticulum; FISH; fluorescent in situ hybridization; GET; Golgi-ER trafficking; ISH; in situ hybridization; MFP; multifunctional protein; mPP; mRNA encoding peroxi

دانلود رایگان متن کامل مقاله ISI 11 صفحه سال انتشار : 2016 سفارش ترجمه

A Houdini's trick in a fly: Leg unfolding with the aid of transient hinges in an extricating Calliphora vicina (Diptera: Calliphoridae)

Keywords: Metamorphosis; Insect legs; Leg distortions; Strength of materials; Buckling; cx; coxa; bh; basal femoral hinge; dfs; distal femoral sclerite; fm; femur; FTJ; femoro-tibial joint; mh; medial femoral hinge; n; number of specimens; pts; proximal tibial scle

دانلود رایگان متن کامل مقاله ISI 12 صفحه سال انتشار : 2016 سفارش ترجمه

Research paperPex17p-dependent assembly of Pex14p/Dyn2p-subcomplexes of the peroxisomal protein import machinery

Keywords: BN-PAGE; blue native polyacrylamide gel; LC-MS; liquid chromatography-mass spectrometry; PTS; peroxisomal targeting signal; RING; really interesting new gene; TPA; tobacco etch virus cleavage site-Protein A; SEC; size exclusion chromatography; Peroxis

دانلود رایگان متن کامل مقاله ISI 13 صفحه سال انتشار : 2016 سفارش ترجمه

CommunicationSalt-inducible Protein Splicing in cis and trans by Inteins from Extremely Halophilic Archaea as a Novel Protein-Engineering Tool

Keywords: PTS; protein trans-splicing; GB1; the B1 domain of IgG binding protein G; HSQC; heteronuclear single quantum coherence; TM; transmembrane; CTD; C-terminal domain; IMAC; immobilized metal chelating; TCEP; tris(2-carboxyethyl)phosphine; CPS; conditional pro

دانلود رایگان متن کامل مقاله ISI 16 صفحه سال انتشار : 2016 سفارش ترجمه

Pexophagy and peroxisomal protein turnover in plants

Keywords: AAA; ATPase associated with diverse cellular activities; ATG; autophagy related; ER; endoplasmic reticulum; IAA; indole-3-acetic acid; IBA; indole-3-butyric acid; ICL; isocitrate lyase; LIR; LC3-interacting region; MLS; malate synthase; NBR1; Neighbor of

دانلود رایگان متن کامل مقاله ISI 24 صفحه سال انتشار : 2016 سفارش ترجمه

dbPHCC: a database of prognostic biomarkers for hepatocellular carcinoma that provides online prognostic modeling

Keywords: HCC; hepatocellular carcinoma; GO; Gene Ontology; PPI; protein-protein interaction; HBV; hepatitis B virus; HCV; hepatitis C virus; HR; Hazard Ratio; C-index; concordance index; API; application programming interface; SPP1; secreted phosphor protein 1;

دانلود رایگان متن کامل مقاله ISI 28 صفحه سال انتشار : 2016 سفارش ترجمه

Pterostilbene-mediated Nrf2 activation: Mechanistic insights on Keap1:Nrf2 interface

Keywords: PTS; pterostilbene; ARE; antioxidant responsive element; Keap1; Kelch-like ECH-associated protein-1; Nrf2; nuclear factor erythroid 2-related factor 2; MIN6 cells; mouse insulinoma-6 cells; MD; molecular dynamics; RMSD; root-mean square deviation; MM-GBSA

دانلود رایگان متن کامل مقاله ISI 30 صفحه سال انتشار : 2016 سفارش ترجمه

Regulation of peroxisomal matrix protein import by ubiquitination

Keywords: AAA; ATPase associated with diverse cellular activities; APEM9; aberrant peroxisome morphology 9; HECT; homologous to the E6-AP carboxyl-terminus; PTS; peroxisomal targeting sequence; RBR ligase; RING-between-RING ligase; RING; really interesting new gene

دانلود رایگان متن کامل مقاله ISI 31 صفحه سال انتشار : 2016 سفارش ترجمه

Role of AAA+-proteins in peroxisome biogenesis and function

Keywords: AAA+;  extended ATPases associated with various cellular activities; ATAD1; ATPase family AAA domain-containing protein 1; ERAD; endoplasmic reticulum associated degradation; Msp1p; mitochondrial sorting of proteins 1; NSF; N-ethylmaleimide-sensitive fac

دانلود رایگان متن کامل مقاله ISI 37 صفحه سال انتشار : 2016 سفارش ترجمه

An homolog of the Frz Phosphoenolpyruvate:carbohydrate phosphoTransferase System of extraintestinal pathogenic Escherichia coli is encoded on a genomic island in specific lineages of Streptococcus agalactiae

Keywords: Group B Streptococcus; PTS; Carbohydrate; MLST; Clonal Complex; Fru family;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2015 سفارش ترجمه

Theme 4: Invasive management of (recurrent) VTE and PTS

Keywords: DVT; PTS; PE; Obstruction; Hemodynamics; Venous claudication; VCSS; Villalta; IVUS; Duplex; MRV; CTV; Thrombectomy; Systemic thrombolysis; CDT; Stenting; Endovenectomy; AV-fistula; Registry; Inflammation; Biomaker;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2015 سفارش ترجمه

Simultaneous utilization of glucose and xylose via novel mechanisms in engineered Escherichia coli

Keywords: CAP; catabolite activator protein; cAMP; cyclic adenosine monophosphate; CCR; carbon catabolite repression; EFB-FH; empty palm fruit bunch fiber hydrolysate; IPTG; isopropyl β-d-1-thiogalactopyranoside; PPP; pentose phosphate pathway; PTS; phosphoenolpyr

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2015 سفارش ترجمه

Pharmacomechanical Catheter-Directed Thrombolysis for Pregnancy-Related Iliofemoral Deep Vein Thrombosis

Keywords: DVT; deep vein thrombosis; IVC; inferior vena cava; LMWH; low molecular weight heparin; PCDT; pharmacomechanical catheter-directed thrombolysis; PTS; postthrombotic syndrome;

دانلود رایگان متن کامل مقاله ISI 9 صفحه سال انتشار : 2015 سفارش ترجمه

Peak-power reduction using improved partial transmit sequence in orthogonal frequency division multiplexing systems

Keywords: OFDM; PAPR; PTS; Phase weighting factor; All Pass Filtering technique

دانلود رایگان متن کامل مقاله ISI 11 صفحه سال انتشار : 2015 سفارش ترجمه

Macrocyclic naphthalene diimides as G-quadruplex binders

Keywords: ALT; Alternative Lengthening Mechanisms; NDI; naphthalene diimides; FRET; Fluorescence Resonance Energy Transfer; SRB; sulforhodamine; PTS; Polyamines Transport Systems; PRCG; Polak-Ribiere Conjugate Gradient; AD4; AutoDock 4.2; MD; molecular dynamics;

دانلود رایگان متن کامل مقاله ISI 12 صفحه سال انتشار : 2015 سفارش ترجمه

Blood-brain transfer and antinociception of linear and cyclic N-methyl-guanidine and thiourea-enkephalins

Keywords: Blood-brain barrier (BBB) transport (influx/efflux); Antinociceptive activity; Linear/cyclic enkephalin analogs; In vivo mouse models; AUC; area under the curve; Alloc; allyloxycarbonyl; BBB; blood-brain barrier; Boc; tertButyloxycarbonyl; BSA; bovine

دانلود رایگان متن کامل مقاله ISI 12 صفحه سال انتشار : 2015 سفارش ترجمه

Identification and functional characterization of Trypanosoma brucei peroxin 16

Keywords: PEX; peroxin; PTS; peroxisomal targeting signal; DAPI; 4′,6′-diamidino-2-phenylindole; GAPDH; glycosomal glyceraldehyde-3 phosphate dehydrogenase; PFK; phosphofructokinase; DIC; differential interference contrast; TbPEX16; Trypanosoma brucei PEX16; Pe

دانلود رایگان متن کامل مقاله ISI 12 صفحه سال انتشار : 2015 سفارش ترجمه

New insights into the peroxisomal protein inventory: Acyl-CoA oxidases and -dehydrogenases are an ancient feature of peroxisomes

Keywords: ACAD; acyl-CoA dehydrogenase; ACOX; acyl-CoA oxidase; FAD; flavin adenine dinucleotide; MTS; mitochondrial targeting signal; Pex; peroxin; PMP; peroxisomal membrane protein; PTS; peroxisomal targeting signal; ROS; reactive oxygen species; Peroxisome; Usti

دانلود رایگان متن کامل مقاله ISI 15 صفحه سال انتشار : 2015 سفارش ترجمه