Ventilatory and cardiocirculatory exercise profiles in COPD: the role of pulmonary hypertension

…, HJ Bogaard, P Trip, H Groepenhoff, H Rietema… - Chest, 2012 - Elsevier
Background Pulmonary hypertension (PH) is a well-recognized complication of COPD. The
impact of PH on exercise tolerance is largely unknown. We evaluated and compared the …

Sildenafil treatment in COPD does not affect stroke volume or exercise capacity

H Rietema, S Holverda, HJ Bogaard… - European …, 2008 - Eur Respiratory Soc
In chronic obstructive pulmonary disease (COPD) patients, stroke volume response to
exercise is impaired. The aim of the present study was to investigate whether 3 months of …

Acute effects of sildenafil on exercise pulmonary hemodynamics and capacity in patients with COPD

S Holverda, H Rietema, HJ Bogaard… - Pulmonary …, 2008 - Elsevier
… Also, on different days, patients performed two maximal exercise tests (CPET) randomly,
1 h … clinical condition, minimally 24 h and maximally 5 days were allowed in between tests. …

Stroke volume increase to exercise in chronic obstructive pulmonary disease is limited by increased pulmonary artery pressure

S Holverda, H Rietema, N Westerhof, JT Marcus… - Heart, 2009 - heart.bmj.com
Aims: This study was designed to investigate the mechanisms by which the right ventricle is
able to increase stroke volume (SV) during exercise in chronic obstructive pulmonary …

Ecotypic Differences between Baltic and North Sea Populations of Delesseria sanguinea and Membranoptera alata

H Rietema - 1993 - degruyter.com
… More details regarding technique, equipment and preparation of media are given in Rietema
Rietema 1991). Also linear growth rates were determined using the same drawings. Only rel…

Evidence for Ecotypic Divergence between Phycodrys rubens Populations from the Baltic Sea and North Sea

H Rietema - 1991 - degruyter.com
Phycodrys rubens from the Baltic (Kiel Bight) kept in a salinity range grew and survived at all
salinities from 33 down to 7.5% o with maximum growth in the range from 23 down to 16.5% …

Cell wall constituents of several siphoneous green algae in relation to morphology and taxonomy

HJ Huizing, H Rietema, JH Sietsma - British Phycological Journal, 1979 - Taylor & Francis
… medium (Rietema, 1975) at 16C under a light intensity of about 1600 lx for 16 h daily. …
Cell walls were hydrolysed with 2 N trifluoroacetic-acid (TFA) under N2 for 2 h at 120C. After …

A morphological, developmental, and caryological study on the life-history of Bryopsis halymeniae (Chlorophyceae)

H Rietema - Netherlands Journal of Sea Research, 1972 - Elsevier
Cultural and caryological investigations on Bryopsis halymeniae from Banyuls give
evidence for a heteromorphic diplohaplontic life-history. A haploid gametophytic phase (Bryopsis …

Xylan and mannan as cell wall constituents of different stages in the life-histories of some siphoneous green algae

HJ Huizing, H Rietema - British phycological journal, 1975 - Taylor & Francis
Infrared spectrum analysis and thin layer chromatography of cell walls of the sporophytic
microthallus of Bryopsis plumosa (Huds.) C.Ag. and the sporophytic macrothallus of Derbesia …

The Regulation of the Life History of Dumontia contorta in Comparison to that of Several Other Dumontiaceae (Rhodophyta)

H Rietema, AM Breeman - 1982 - degruyter.com
Abstract Effects of daylength and temperature on the formation of erect macrothalli from
crustose microthalli tf Dumontia contorta from Roscoff (49 N. lat.), the Isle of Man (54 N. lat.) and …