دانلود مقالات ISI درباره Fev1 + ترجمه فارسی

A phase III randomized controlled trial of tiotropium add-on therapy in children with severe symptomatic asthma

Keywords: Anticholinergic drug; asthma; asthma control; children; efficacy; FEV1; lung function; Respimat; safety; tiotropium; ACQ-IA; Interviewer-administered Asthma Control Questionnaire; FEF25-75; Forced expiratory flow at 25% to 75% of the forced vital capacity

دانلود رایگان متن کامل مقاله ISI 48 صفحه سال انتشار : 2017 سفارش ترجمه

Variability of gait speed during six minutes walking test in COPD and cystic fibrosis patients

Keywords: 6MWT; six minutes walking test; COPD; chronic obstructive pulmonary disease; CF; cystic fibrosis; SpO2; oxygen saturation; BMI; body mass index; FEV1; forced expiratory volume in one second; FVC; forced vital capacity; Walking; Speed; Respiratory; Exercis

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2016 سفارش ترجمه

Research paperAssessment of pulmonary function among sasang constitutional types: A population-based study in Korea

Keywords: Sasang constitutional medicine; Tae-Eum type; So-Eum type; So-Yang type; FVC; FEV1;

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2016 سفارش ترجمه

Acinar ventilation heterogeneity in COPD relates to diffusion capacity, resistance and reactance

Keywords: Airway resistance; Plethysmography; Whole body; Pulmonary diffusion capacity; Pulmonary disease; Chronic obstructive; Pulmonary ventilation; AX; reactance area; COPD; Chronic obstructive pulmonary disease; DL,CO; diffusing capacity for the lungs measured

دانلود رایگان متن کامل مقاله ISI 6 صفحه سال انتشار : 2016 سفارش ترجمه

A randomized controlled trial on the benefits and respiratory adverse effects of morphine for refractory dyspnea in patients with COPD: Protocol of the MORDYC study

Keywords: 6MWT; six minute walking test; CAT; COPD Assessment Test; COPD; Chronic Obstructive Pulmonary Disease; EQ-5D-5L; 5-Level version of EuroQol-5 Dimensions; FEV1; forced expiratory volume in the first second; FVC; forced vital capacity; GOLD; Global initiati

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

Efficacy of non-invasive ventilation as a rescue therapy for relieving dyspnea in patients with stable severe COPD

Keywords: Chronic obstructive pulmonary disease; Exertional dyspnea; Non-invasive ventilation; Rescue therapy; FEV1; forced expiratory volume in 1s; FRC; functional residual capacity; FVC; forced vital capacity; IC; inspiratory capacity; RV; residual volume; TLC; t

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

Original ArticleSafety and efficacy of prolonged levofloxacin inhalation solution (APT-1026) treatment for cystic fibrosis and chronic Pseudomonas aeruginosa airway infection

Keywords: AE; adverse event; CF; cystic fibrosis; CFQ-R; Cystic Fibrosis Questionnaire-Revised; CI; confidence interval; EUCAST; European Committee on Antimicrobial Susceptibility Testing; FEV1; forced expiratory volume in 1 second; LIS; levofloxacin inhalation s

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

Original ArticleContinuous alternating inhaled antibiotic therapy in CF: A single center retrospective analysis

Keywords: Cystic fibrosis; Inhaled antibiotics; Pseudomonas aeruginosa; FEV1; Continuous alternating inhaled antibiotic therapy;

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

Microparticles: A new insight into lung primary graft dysfunction?

Keywords: ARDS; acute respiratory distress syndrome; BOS; bronchiolitis obliterans syndrome; CLAD; chronic lung allograft dysfunction; FEV1; forced expiratory volume in 1 s; FVC; forced vital capacity; HLA; human leucocyte antigen; IRI; ischemia reperfusion injury

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

Effect of GST variants on lung function following diesel exhaust and allergen co-exposure in a controlled human crossover study

Keywords: BMI; body mass index; DE; diesel exhaust; DeltaDEA; delta diesel exhaust with allergen; DRS; dose-response slope; FA; filtered air; DeltaFAA; delta filtered air with allergen; FEV1; forced expiratory volume in one second; GST; glutathione S-transferases;

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

ReviewThe Vitamin D Assessment (ViDA) Study: design of a randomized controlled trial of vitamin D supplementation for the prevention of cardiovascular disease, acute respiratory infection, falls and non-vertebral fractures

Keywords: ACC; Accident Compensation Corporation; COPD; chronic obstructive pulmonary disease; CVD; cardiovascular disease; FEV1; forced expiratory volume in 1 s; FVC; forced vital capacity; NHANES; National Health and Nutrition Examination Survey; NHI number; Nat

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2016 سفارش ترجمه

The Society of Thoracic Surgeons General Thoracic Surgery Database: 2016 Update on Research

Keywords: A&P; Access and Publications; ARDS; adult respiratory distress syndrome; CMS; Centers for Medicare and Medicaid Services; Dlco; diffusion capacity for carbon monoxide; DVT; deep venous thrombosis; EPP; extrapleural pneumonectomy; FEV1; forced expired volu

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2016 سفارش ترجمه

Effect of long-term vitamin E and selenium supplementation on urine F2-isoprostanes, a biomarker of oxidative stress

Keywords: F2-IsoP; 8-iso-prostaglandin F2-alpha; COPD; chronic obstructive pulmonary disease; RAS; The Respiratory Ancillary Study to SELECT; SELECT; The Selenium and Vitamin E Cancer Prevention Trial; ELISA; enzyme linked immunoassay; BMI; body mass index; FEV1; f

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2016 سفارش ترجمه

Original ArticleRespiratory pathogens mediate the association between lung function and temperature in cystic fibrosis

Keywords: Cystic fibrosis; Temperature; Climate; Lung function; FEV1; Pseudomonas aeruginosa; MRSA;

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2016 سفارش ترجمه

Video-Assisted Mediastinoscopic Lymphadenectomy for Staging Non-Small Cell Lung Cancer

Keywords: c; clinical; CI; confidence interval; CT; computed tomography; Dlco; diffusing capacity of the lung for carbon monoxide; ESTS; European Society of Thoracic Surgeons; EBUS-FNA; endobronchial ultrasonographic fine-needle aspiration; EUS-FNA; esophageal ultr

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2016 سفارش ترجمه

Sequential Bilateral Bronchoscopic Lung Volume Reduction With One-Way Valves for Heterogeneous Emphysema

Keywords: BLVR; bronchoscopic lung volume reduction; EBV; endobronchial valve; FEV1; forced expiratory volume in 1 second; FVC; forced vital capacity; HRCT; high-resolution computed tomography; LVRS; lung volume reduction surgery; RV; residual volume; SGRQ; St. Geo

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2016 سفارش ترجمه

Lung function decline over 25 years of follow-up among black and white adults in the ARIC study cohort

Keywords: Aging; Epidemiology; Lung function tests; Respiratory; Spirometry; ARIC; Atherosclerosis Risk in Communities; CI; confidence interval; COPD; chronic obstructive pulmonary disease; FEV1; forced expiratory volume in one second; FVC; forced vital capacity; G

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2016 سفارش ترجمه

Efficacy and safety of indacaterol/glycopyrronium in Japanese patients with COPD: Pooled analysis of SHINE and ARISE

Keywords: AE; adverse event; CCV; cerebro-cardiovascular; CI; confidence interval; DPI; dry powder inhaler; ECG; electrocardiography; FEV1; forced expiratory volume in one second; FVC; forced vital capacity; GOLD; Global Initiative for Chronic Obstructive Lung Dise

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2016 سفارش ترجمه

Full Length ArticleTrabecular and cortical bone deficits are present in children and adolescents with cystic fibrosis

Keywords: CF; cystic fibrosis; CFTR; CF transmembrane conductance regulator; CSA; cross-sectional area; DXA; dual energy x-ray densitometry; FEV1; forced expiratory volume in 1 s; FVC; forced vital capacity; LBM; lean body mass; LBMI; lean body mass index; QCT; qu

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2016 سفارش ترجمه

Predictors of non-referral of patients with cystic fibrosisfor lung transplant evaluation in the United States

Keywords: BMI; body mass index; CF; cystic fibrosis; CFFPR; Cystic Fibrosis Foundation Patient Registry; CI; confidence interval; FEV1; forced expiratory volume in 1 s; FPL; federal poverty level; ISHLT; International Society for Heart and Lung Transplantation; LA

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2016 سفارش ترجمه

International prospective study of distal intestinal obstruction syndrome in cystic fibrosis: Associated factors and outcome

Keywords: CF; Cystic fibrosis; CFRD; CF-related diabetes; DIOS; Distal intestinal obstruction syndrome; I DIOS; Incomplete distal intestinal obstruction syndrome; C DIOS; Complete distal intestinal obstruction syndrome; EPI; Exocrine pancreatic insufficiency; FEV1;

دانلود رایگان متن کامل مقاله ISI 9 صفحه سال انتشار : 2016 سفارش ترجمه

Original ArticlesRandomized Trial of Once-Daily Fluticasone Furoate in Children with Inadequately Controlled Asthma

Keywords: fluticasone furoate; inhaled corticosteroids; asthma; spirometry; AUC0-24; Area under the plasma-concentration curve over 0-24 hours; AE; Adverse event; cACT; childhood Asthma Control Test; FEV1; Forced expiratory volume in 1 second; FF; Fluticasone furoa

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

The National Surgical Quality Improvement Program risk calculator does not adequately stratify risk for patients with clinical stage I non-small cell lung cancer

Keywords: lung cancer; SBRT; lobectomy; NSQIP; ACE; Adult Comorbidity Evaluation-27; ASA; American Society of Anesthesiologists; AUC; area under the curve; CI; confidence interval; DLCO; diffusing capacity of the lungs for carbon monoxide; FEV1; forced expiratory v

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

Restrictions in ATP diffusion within sarcomeres can provoke ATP-depleted zones impairing exercise capacity in chronic obstructive pulmonary disease

Keywords: AK; adenylate kinase; CK; creatine kinase; PK; pyruvate kinase; Cr; creatine; PCr; phosphocreatine; FEV1; forced expiratory volume in 1 s; FVC; forced vital capacity; DLCO; diffusing capacity of the lung for carbone monoxide; PaO2; arterial partial pressu

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

Psychometric Properties of the Asthma Symptom Diary (ASD), a Diary for Use in Clinical Trials of Persistent Asthma

Keywords: Asthma; Symptoms; Patient-reported outcome; Psychometrics; Validity; ACQ; Asthma Control Questionnaire; AQLQ; Asthma Quality of Life Questionnaire; ASD; Asthma symptom diary; CDF; Cumulative distribution function; CFA; Confirmatory factor analysis; CFI; C

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

IL-17 protein levels in both induced sputum and plasma are increased in stable but not acute asthma individuals with obesity

Keywords: Asthma; Depression; Exacerbation; IL-17; Neutrophils; Obesity; ACQ-5; five-question Asthma Control Questionnaire; BDI; Beck Depression Inventory; BMI; body mass index; FEV1; forced expiratory volume in 1 s; FVC; forced vital Capacity; GER; gastroesophage

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

Choline supplementation alters some amino acid concentrations with no change in homocysteine in children with cystic fibrosis and pancreatic insufficiency

Keywords: Cystic fibrosis; Amino acids; Choline; Children; LYM-X-SORB; BCAA; branched-chain amino acids; BMIZ; BMI-for-age Z score; CF; cystic fibrosis; CHOP; Children's Hospital of Philadelphia; DRI; Dietary Reference Intake; FEV1; forced expiratory volume at 1 se

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

A systematic review and meta-analysis of the herbal formula Buzhong Yiqi Tang for stable chronic obstructive pulmonary disease

Keywords: BZYQT; Buzhong Yiqi Tang; COPD; chronic obstructive pulmonary disease; CENTRAL; Cochrane Central Register of Controlled Trials; CBM; Chinese Biomedical Database; CNKI; China National Knowledge Infrastructure; CQVIP; ChongQing VIP; WFMO; Wanfang Medicine O

دانلود رایگان متن کامل مقاله ISI 15 صفحه سال انتشار : 2016 سفارش ترجمه

Tiotropium add-on therapy in adolescents with moderate asthma: A 1-year randomized controlled trial

Keywords: Adolescent; anticholinergic drug; asthma; asthma control; efficacy; FEV1; lung function; Respimat; safety; tiotropium; ACQ-6; 6-question Asthma Control Questionnaire; ACQ-7; 7-question Asthma Control Questionnaire; AQLQ(S)+12; Asthma Quality of Life Quest

دانلود رایگان متن کامل مقاله ISI 18 صفحه سال انتشار : 2016 سفارش ترجمه

A pilot study to monitor changes in spirometry and lung volume, following an exacerbation of Chronic Obstructive Pulmonary Disease (COPD), as part of a supported discharge program

Keywords: Chronic Obstructive Pulmonary Disease (COPD); Acute exacerbation of COPD; Hospital-at-home; COPD re-exacerbation; COPD; Chronic Obstructive Pulmonary Disease; IVC; Inspiratory Vital Capacity; FEV1; Forced Expiratory Volume in 1 s; FVC; Forced Vital Capac

دانلود رایگان متن کامل مقاله ISI 21 صفحه سال انتشار : 2016 سفارش ترجمه

Non-invasive screening for pulmonary hypertension in idiopathic pulmonary fibrosis

Keywords: Idiopathic pulmonary fibrosis; Pulmonary hypertension; Echocardiography; Electrocardiogram; Computed tomography scan; 6MWT; six minute walk test; ABG; arterial blood gases; AA; ascending aorta; AUC; area under curve; CART; classification and regression tr

دانلود رایگان متن کامل مقاله ISI 35 صفحه سال انتشار : 2016 سفارش ترجمه

Computed tomography (CT)-assessed bronchodilation induced by inhaled indacaterol and glycopyrronium/indacaterol in COPD

Keywords: Bronchodilation; β2 agonists; Anticholinergics; Pulmonary function tests; Three-dimensional computed tomography; Ai; airway inner luminal area; BMI; body mass index; COPD; chronic obstructive pulmonary disease; CT; computed tomography; DLco; diffusing ca

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

The overall impact of COPD (CAT) and BODE index on COPD male patients: correlation?

Keywords: BMI; body mass index; BODE; body mass index, airflow limitation (forced expiratory volume in one second), dyspnoea and 6-min walk distance; FEV1; forced expiratory volume in one second; CAT; COPD assessment Test; CCQ; Clinical COPD questionnnaire; COPD; c

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2015 سفارش ترجمه

Effects of blood lead levels on airflow limitations in Korean adults: Findings from the 5th KNHNES 2011

Keywords: KNHANES; Korea National Health and Nutrition Examination Survey; COPD; chronic obstructive pulmonary disease; PM; Atmospheric particulate matter; FEV1; forced expiratory volume in 1 s; FVC; forced vital capacity; BMI; body mass index; Heavy metals; Lead;

دانلود رایگان متن کامل مقاله ISI 6 صفحه سال انتشار : 2015 سفارش ترجمه

Effect of tiotropium on neural respiratory drive during exercise in severe COPD

Keywords: Bronchodilator; Diaphragmatic EMG; Dyspnea; Efficiency of neural respiratory drive; Exercise tolerance; Muscarinic receptor antagonist; IC; inspiratory capacity; FEV1; forced expiratory volume in one second; FVC; forced vital capacity; FRC; functional res

دانلود رایگان متن کامل مقاله ISI 6 صفحه سال انتشار : 2015 سفارش ترجمه

Randomized trial of efficacy and safety of dornase alfa delivered by eRapid nebulizer in cystic fibrosis patients

Keywords: AE; adverse event; CF; cystic fibrosis; CFQ-R; Cystic Fibrosis Questionnaire Revised; CI; confidence interval; FEF25-75; forced expiratory flow in mid-expiratory phase; FEV1; forced expiratory volume in the first second of expiration; FVC; forced vital

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

Transcatheter Aortic Valve Replacement Results in Improvement of Pulmonary Function in Patients With Severe Aortic Stenosis

Keywords: BNP; B-type natriuretic peptide; CI; confidence interval; COPD; chronic obstructive pulmonary disease; FEV1; forced expiratory volume in 1 second; FVC; forced vital capacity; OR; odds ratio; PFT; pulmonary function testing; TAVR; transcatheter aortic valv

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

Roflumilast for asthma: Efficacy findings in mechanism of action studies

Keywords: Allergen; Asthma; Eosinophil; FEV1; Roflumilast

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

Medically treated exacerbations in COPD by GOLD 1-4: A valid, robust, and seemingly low-biased definition

Keywords: Moderate exacerbations; Oral corticosteroids; Antibiotics; Epidemiology; CGPS; the copenhagen general population study; COPD; chronic obstructive pulmonary disease; FEV1; forced expiratory volume in one second; FVC; forced vital capacity; GOLD; global ini

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

Roflumilast for asthma: Efficacy findings in placebo-controlled studies

Keywords: Asthma; Exacerbation; FEV1; Placebo; Roflumilast

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

Five-Year Survival after Cryoablation of Stage I Non-Small Cell Lung Cancer in Medically Inoperable Patients

Keywords: COPD; chronic obstructive pulmonary disease; FEV1; forced expiratory volume in 1 second; NSCLC; non-small cell lung cancer; PFT; pulmonary function test; VATS; video-assisted thoracoscopic surgery;

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

Regional PM2.5 and asthma morbidity in an agricultural community: A panel study

Keywords: AFARE;; Aggravating Factors of Asthma in a Rural Environment; CC;; complete case; ED;; emergency department; FEV1;; forced expiratory volume in 1 s; FEV1%;; forced expiratory volume in 1 s as a percentage of predicted value; GEE;; generalized estimating

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

Decreased Diaphragm Excursion in Stroke Patients With Dysphagia as Assessed by M-Mode Sonography

Keywords: Cough; Deglutition disorders; Diaphragm; Rehabilitation; Stroke; Ultrasonography; DB; deep breathing; FEV1; forced expiratory volume in 1 second; FVC; forced vital capacity; MBI; Modified Barthel Index; MEP; maximum expiratory pressure; MIP; maximum inspi

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

Long term effects of prenatal and postnatal airborne PAH exposures on ventilatory lung function of non-asthmatic preadolescent children. Prospective birth cohort study in Krakow

Keywords: DEP; diesel exhaust particles; ETS; environmental tobacco smoke; FVC; forced volume capacity; FEV05; forced expiratory volume in 0.5 s; FEV1; forced expiratory volume in 1 s; FEF25-75; forced expiratory flow 25-75%; GEE; Generalized Estimation Equat

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

Tiotropium + olodaterol shows clinically meaningful improvements in quality of life

Keywords: COPD; Quality of life; Long-acting bronchodilator; Tiotropium; Olodaterol; AE; adverse event; AUC0-3; area under the curve from 0 to 3 h; COPD; chronic obstructive pulmonary disease; FEV1; forced expiratory volume in 1 s; GOLD; Global initiative for c

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

Efficacy of BI 671800, an oral CRTH2 antagonist, in poorly controlled asthma as sole controller and in the presence of inhaled corticosteroid treatment

Keywords: CRTH2 antagonist; Asthma; Inhaled corticosteroid; ACQ; Asthma Control Questionnaire; AQLQ; Asthma Quality of Life Questionnaire; AUC; area under the curve; bid; twice daily; CI; confidence interval; CRTH2; chemoattractant receptor homologous molecule on T

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

Concentration of fractional excretion of nitric oxide (FENO): A potential airway biomarker of restored CFTR function

Keywords: ATS; American Thoracic Society; BMI; body mass index; CF; cystic fibrosis; CFTR; cystic fibrosis transmembrane conductance regulator; CI; confidence interval; COPD; chronic obstructive pulmonary disease; FENO; fractional excretion of nitric oxide; FEV1; f

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

Randomized, single blind, controlled trial of inhaled glutathione vs placebo in patients with cystic fibrosis

Keywords: CF; cystic fibrosis; GSH; glutathione; CFTR; cystic fibrosis transmembrane regulator; FEV1; forced expiratory volume in 1 s; FVC; forced vital capacity; FEF25-75; flow at the mid-portion of forced vital capacity; 6MWT; six minute walking test; BMI; bod

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

Analysis of longitudinal quality-of-life data in high-risk operable patients with lung cancer: Results from the ACOSOG Z4032 (Alliance) multicenter randomized trial

Keywords: 10; 10.4; AE; adverse event; DLCO; diffusion capacity of the lung for carbon monoxide; FEV1; forced expiratory volume in 1 second; MCS; mental component summary; PCS; physical component summary; QOL; quality of life; SF36; 36-item short-form health survey

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

Roflumilast for asthma: Efficacy findings in non-placebo-controlled comparator and dosing studies

Keywords: Asthma; Beclomethasone; FEV1; Montelukast; Roflumilast

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