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6873. ECG body surface mapping (BSM) in type 1 diabetic patients

Creator:
Denisa Žďárská, Pavlína Pelíšková, Jiří Charvát, Jaroslav Slavíček, Mikuláš Mlček, Eva Medová, and Otomar Kittnar
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Fyziologie člověka a srovnávací fyziologie, fyziologie člověka, diabetes mellitus, elektrokardiogramy, human physiology, electrocardiograms, diabetes mellitus 1. typu, vektorkardiogram (VCG), mapování potenciálu z povrchu těla, diabetes mellitus type 1, vectorcardiogram (VCG), body surface potential maps (BSPM), 14, and 612
Language:
English
Description:
a1_Diabetes mellitus is a risk factor of cardiovascular diseases. ECG of patients with diabetes mellitus type 1 (DM 1) shows tachycardia (block of parasympathetic innervation) and abnormal repolarization (increased QT interval and QT dispersion (QTd)) indicating a risk of ventricular tachycardia and sudden death in young people with DM 1. The aim of the present report was to measure 145 parameters of the heart electric field in 22 patients (14 men, 8 women) with DM 1 without complications (mean age 32.8±11.4 years) and in 22 controls (11 men, 11 women, mean age 30.1±3.4 years). The duration of diabetes was 13.9 ±7.8 years. The parameters were regist ered by the diagnostic system Cardiag 112.2 and statistically evaluated by the Student and Mann-Whitney test. Tachycardia (86.3±2.7 beats.min-1), shortening of both QRS (79.9±1.6 ms) and QT (349.0±5.9 ms) and increased QT dispersion (115±36 ms) were observed in DM 1 when compared with the controls (75.0±2.1 beats. min -1, QRS 89.9±2.7 ms, QT 374.0±4.4 ms, QTd 34.0±12.0 ms, p<0.01). The QTc was 415.2±4.1 ms in DM 1 and 401.4±6.6 ms in controls (NS)., a2_Other significant findings in DM 1 were: higher maximum of depolarization isopotential maps (DIPMmax) in the initial phase of QRS and less positive in the terminal phase, more negative minimum (DIPMmin) during QRS similarly as the minimum in depolarization isointegral maps (DIIMmin) and the minimum in isointegral map of the Q wave (Q-IIMmin), lower maximum in repolarization isopotential maps (RIPMmax) and less negative minimum (RIPMmin), more negative amplitude of Q wave (Q-IPMAM) and more pronounced spread of depolarization (activation time). Our results confirmed a decreased parasympathetic to sympathetic tone ratio (tachycardia, shortening of the activation time) and revealed different depolarization and repolarization patterns in DM 1. The differences in heart electric field parameters measured by the BSPM method in DM 1 and in the controls indicate the importance of ECG examination of diabetic patients type 1 in the prevention of cardiovascular diseases., D. Žďárská, P. Pelíšková, J. Charvát, J. Slavíček, M. Mlček, E. Medová, O. Kittnar., and Obsahuje bibiografii a bibliografické odkazy
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

6874. ECG body surface mapping in patients with gestational diabetes mellitus and optimal metabolic compensation

Creator:
Eva Žákovičová, Otomar Kittnar, Jaroslav Slavíček, Eva Medová, Přemysl Šváb, and Jiří Charvát
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Fyziologie člověka a srovnávací fyziologie, echokardiografie, srdeční rytmus, diabetes mellitus, echocardiography, heart rate, ECG body surface mapping, heart rate variability, gestational diabetes mellitus, 14, and 612
Language:
English
Description:
Women with gestational diabetes mellitus (GDM) are at increased risk for cardiovascular diseases (CVD) events compared with women without GDM. The aim of the present study was to evaluate 200 parameters of the heart electric field in 35 women with GDM under optimal glycemic compensation compared to 32 healthy pregnant women. All examinations were performed in the 36th week of gestation. The parameters in ECG body surface mapping (BSM) were registered by the diagnostic system Cardiag 112.2. The absolute values of maximum and minimum in depolarization and repolarization isopotential, isointegral and isoarea maps were not significantly different between the groups. These findings correspond to the result of heart rate variability examination. However BSM revealed the significant prolongation of QRS complex (p=0.05), shortening of ventricular myocardial activation time (ICHVAT) (p=0.01), prolongation of mean QT duration (p=0.01) and increase of QT interval dispersion (p=0.01) in women with GDM. Duration of QRS and ICHVAT significantly correlated with interventricular septum and posterior wall thickness in GDM group, QTd interval correlated significantly with HbA1C level. We conclude that despite of optimal metabolic control several significant abnormalities detected by ECG BSM are still present in patients with GDM., E. Žákovičová, O. Kittnar, J. Slavíček, E. Medová, P. Šváb, J. Charvát., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

6875. Echinorhynchus salmonis Müller, 1784 absent in Britain and Ireland: re-identification of museum specimens

Creator:
Chubb, James C.
Format:
bez média and svazek
Type:
model:article and TEXT
Language:
English
Description:
Collections of ‘Echinorhynchus salmonis’ from Britain and Ireland deposited in The Natural History Museum, London (1921.7.19.3–12 and 1952.10.30.122–127) were reidentified as Acanthocephalus clavula and Acanthocephalus lucii respectively. The amphipod, Pontoporeia affinis, European intermediate host of E. salmonis, does not occur in the British Isles, so it is concluded that E. salmonis is absent from British and Irish freshwater fishes.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

6876. Echolokace a hlasové projevy rejskovitých hmyzožravců. I. Orientace v prostoru a seismické vibrace

Creator:
Schneiderová, Irena
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Biologické vědy, rejskovití, Soricidae, Česko, Czechia, orientace v prostoru, orientace v prostředí, echolokace, bělozubky, akustické monitorování, vnitrodruhová komunikace, dorozumívání zvířat, seismické vibrace, echolocation, Crocidurinae, 2, and 57/59
Language:
Czech
Description:
Rejskovití hmyzožravci (čeleď Soricidae) jsou drobní savci, kterých si v přírodě často sotva všimneme. Vyznačují se však mnoha zajímavostmi, díky kterým rozhodně stojí za naši pozornost. K těmto zajímavostem lze zařadit i schopnost echolokace, tj. schopnost orientovat se v prostoru za pomoci ozvěn cvakání, které vydávají. Kromě cvakání se během pohybu prostředím patrně orientují i pomocí štěbetavých hlasů. Bělozubky hnědé (Suncus murinus) při pohybu v neznámém prostředí také „duní“. Zda se i toto dunění uplatňuje při orientaci v prostoru není zatím jasné. Bělozubky pouštní (Diplomesodon pulchellum) zase při přechodu mezi různými typy substrátu vibrují, a tyto vibrace vytvářené celým tělem jim pravděpodobně pomáhají odhadnout vlastnosti substrátu a vyhnout se tak zbytečnému hrabání v hustém písku., Shrews (Soricidae) are small mammals that can be barely noticed in nature. However, there are many interesting facts that make them noteworthy, including echolocation - the ability to navigate with the help of echoes of the clicks they produce. Apart from the clicks, twitters are also probably used for navigation. The Asian House Shrew (Suncus murinus) moving through an unfamiliar environment produces boom, but it is not yet clear whether this sound is used for navigation. The Piebald Shrew (Diplomesodon pulchellum) produces body vibrations in response to a change in the substrate under their feet. These vibrations may be used for exploration of substrate density to avoid digging in dense sand., and Irena Schneiderová.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

6877. Echolokace a hlasové projevy rejskovitých hmyzožravců. II. Vnitrodruhová komunikace a ontogeneze hlasového repertoáru

Creator:
Schneiderová, Irena
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Biologické vědy, rejskovití, hmyzožravci, ontogeneze živočichů, Soricidae, insectivores, animal ontogeny, 2, and 57/59
Language:
Czech
Description:
Rejskovití hmyzožravci (Soricidae) vydávají v nejrůznějších situacích mnoho typů hlasů. Dospělí jedinci se ozývají, pokud jsou v nebezpečí nebo se dostanou do potyčky s jiným jedincem svého druhu, během námluv a páření nebo při kontaktu s potomky. Také mláďata vydávají nejrůznější hlasy, jimiž se často snaží upozornit na své strádání nebo udržet kontakt s matkou a sourozenci. Přestože v poslední době přibývá publikací zabývajících se problematikou akustické komunikace rejskovitých, je to stále poměrně neprobádaná oblast. Mnohé otázky by mohly být zodpovězeny studiem bělozubky hnědé (Suncus murinus), která dobře prospívá i v péči člověka., Shrews (Soricidae) utter many types of vocalization in various situations. Adult individuals emit vocalizations when they are in danger or in a fight with conspecifics, during courtship and mating or when they keep contact with their offspring. Juveniles utter variable vocalizations mostly to prevent their discomfort and to keep contact with their mother and siblings. Although the number of publications has increased recently, acoustic communica­tion among shrews still remains a quite unexplored field. Our knowledge might be significantly expanded by studying the Asian House Shrew (Suncus murinus), a species that can be successfully kept and bred in captivity., and Irena Schneiderová.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

6878. Eckertův kalendář českého zemědělského školství pro posluchače a absolventy zemědělských ústavů a pro české rolnictvo na rok

Publisher:
Nákladem "Hosp. listu v Chrudimi"
Format:
print, text, regular print, bez média, svazek, and svazky : ilustrace, tabulky ; 24 cm
Type:
model:monograph and TEXT
Subject:
Zemědělství. Pedologie. Agrotechnika. Agroekologie, vzdělávání, školství, školy zemědělské, zemědělství, odborníci zemědělští, pracovníci zemědělští, Česko, 631, 377, 24, and UA01
Language:
Czech
Description:
K tisku upravil za přispění vynikajících odborníků Jan Eckert, odborný hospodářský učitel v Litomyšli a majitel "České Hospodyně" vycházející v Chrudimi
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

6880. Eco-hydrological impacts of Eucalyptus in the semi humid Ethiopian Highlands: the Lake Tana Plain

Creator:
Chanie, Tilashwork, Collick, Amy S., Adgo, Enyew, Johannes Lehmann, C., and Steenhuis, Tammo S.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Eucalyptus, soil water repellency, Croton machrostachyus, and Koga watershed
Language:
Slovak
Description:
Eucalyptus is the tree of choice for wood production by farmers in Ethiopia. Although there are many claims about its harmful effect on ecology and water availability, little actual research exists. The main objective of this study was, therefore, to study the extent of harm of Eucalyptus on the ecosystem. This study was conducted at the Koga Watershed near Lake Tana in Ethiopia. Twenty-five farmers were interviewed and a field experiment with three replications was carried out to quantify the effect of Eucalyptus on various soil physical and chemical properties and maize crop measurements and to compare bulk density, soil moisture contents, maize crop counts and shading effects in fields bordered by Eucalyptus and Croton macrostachyus. Our results show that Eucalyptus decreased both soil nutrients and maize yields within 20 m of the trees. Although moisture content was not affected during the monsoon, it decreased faster within 30 m of the Eucalyptus trees than elsewhere. Soils become water repellent, too. Local farmers’ perception agreed with our experimental findings and indicated that Eucalyptus trees are exhausting the once productive land. They also reported that Eucalyptus dries up springs. Despite this, the growers insist on planting Eucalyptus because of its cash income.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

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