26 research outputs found

    The Estimation of Acidic Behavior of Wood by Treatment with Aqueous Na2HPO4 Solution

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    As a new approach, the acidity that wood exhibits under moderate conditions is assayed by stimulated dissociation of weak wood acids in lightly basic secondary phosphate solutions. To assure a sufficient dissociation of hardly soluble weak acids in the solution, the amount of wood suspended in Na2HPO4 solutions should be small but vary depending on the degree of acidity of wood species. However, the difficulties are associated with the titration of very dilute acids limiting the precision of the measurement. If the disintegrated wood is suspended in a secondary phosphate solution, the weak woods acids form the conjugate acid Na2HPO4 from secondary phosphate Na2HPO4 resulting in a pH fall of the solution. The decrease in the pH value in phosphate solution, which depends on the wood acidity, can be evaluated to estimate the acidity arising from wood under moderate conditions

    Aqua­(di-2-pyridyl­amine-Îș2 N 2,N 2â€Č)(pyridine-2,6-dicarboxyl­ato-Îș3 O 2,N,O 6)zinc monohydrate

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    In the title compound, [Zn(C7H3NO4)(C10H9N3)(H2O)]·H2O, the ZnII atom has a distorted octa­hedral coordination geometry. One of the water mol­ecules is coordinated with the ZnII ion and this mol­ecule forms an O—H⋯O inter­action with the lattice water mol­ecule. The pyridine-2,6-dicarboxyl­ate ligand is almost planar (r.m.s. deviation = 0.0242 Å). In the crystal, C—H⋯O, C—H⋯N, O—H⋯O and N—H⋯O hydrogen bonds are present

    Essential wood oil of Cupressus sempervirens varieties (horizontalis and pyramidalis)

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    WOS: 000475471200003The essential oils isolated from the woods of Cupressus sempervirens var. horizantalis and var. pyramidalis harvested from natural and cultivated locations in Turkey were characterized by GC-MS analyses. Fifty-one compounds, representing 91.9-95.7% of the oil composition, were identified. The oils obtained from two varieties wood exhibited quite similar composition. Sapwood and heartwood oils were mainly composed of oxygenated monoterpenes (43.7-72.4%), sesquiterpenoids (8.7-36.5%) and diterpenoids (2.2-10.4%). The major compounds were carvacrol methyl ether (38.2-62.6%), alpha-cedrol(15.7-34.3%), manool (1.75-9.83%), terpinen-4-ol acetate (0.82-4.15%) and bornylacetate (0.26-4.62%). Compared to other Cupressus species, Cupressus sempervirens wood can be classified as a carvacrol methyl ether rich species. As a result, the wood oil of Cupressus species can be characterized by the presence of two compounds: a-cedrol and carvacrol or carvacrol methyl ether

    Effects of the combined treatment of bilateral subthalamic nucleus stimulation and levodopa on balance and mobility in Parkinson’s disease = A kombinĂĄlt kĂ©toldali subthalamicusmag-stimulĂĄciĂł Ă©s levodopakezelĂ©s hatĂĄsa az egyensĂșlyra Ă©s a mobilitĂĄsra Parkinson-kĂłrban

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    Background and purpose – To evaluate the efficacy of the combined therapy of bilat- eral subthalamic nucleus deep brain stimula- tion (STN-DBS) and dopaminergic medication on balance and mobility in patients with Parkinson’s disease (PD). Methods – Eighteen PD patients under bilateral STN-DBS stimulation therapy, were enrolled in this study. Unified Parkinson’s Disease Rating Scale (UPDRS) was applied to assess the patients’ clinical character- istics. UPDRS part III postural instability/ gait disorder (PIGD) scores (sum of items 3.9-3.13) and UPDRS part III postural stability item (item 3.12) were calculated separately. Patients were evaluated with Berg Balance Scale (BBS), Mini-Balance Evaluation Systems Test (Mini-BESTest), Timed Up and Go (TUG) test, dual-task TUG test, and Forward Func- tional Reach (FFR) Test in two conditions: Stimulation-ON (stim-ON)/Medication-ON (Med-ON) and Stimulation-OFF (Stim-OFF)/ Med-ON Results – The mean age of patients was 59.5±9.1 (R: 41-71) years. The UPDRS part III total score and PIGD subsection score significantly improved after stimulation (p=0.001), but the postural instability item of the UPDRS part III did not change signifi- cantly (p=0.1). There were no significant differences between the Stim-ON/Med-ON and Stim-OFF/Med-ON conditions, in terms of total Mini-BESTest total scores, total BBS score, FFR test score (p>0.05 for all of them). TUG test was significantly improved in the Stim-ON/Med-ON condition compared to Stim-OFF/Med-ON condition (p=0.03), but DT-TUG test did not change (p=0.1). Conclusion – Combined bilateral STN-DBS and dopaminergic medication therapy had an additional improvement on motor symp- toms and mobility performance, but not on balance and dual-task mobility. | HĂĄttĂ©r Ă©s cĂ©l – A kĂ©toldali subthalamicus mag mĂ©ly agyi stimulĂĄciĂłja (STN-DBS) Ă©s a dopaminerg gyĂłgyszeres kezelĂ©s egyĂŒttes hatĂ©konysĂĄgĂĄnak Ă©rtĂ©kelĂ©se az egyensĂșlyra Ă©s a mobilitĂĄsra Parkinson-kĂłrban (PD) szen- vedƑ betegeknĂ©l. MĂłdszerek – A vizsgĂĄlatba 18, kĂ©toldali STN- DBS stimulĂĄciĂłs terĂĄpia alatt ĂĄllĂł PD-beteget vontak be. A betegek klinikai jellemzƑinek Ă©rtĂ©kelĂ©sĂ©re az egysĂ©ges Parkinson-kĂłr Ă©rtĂ©kelƑ skĂĄlĂĄt (UPDRS) alkalmaztĂĄk. Az UPDRS III. rĂ©szĂ©nek posturalis instabilitĂĄs/ jĂĄrĂĄsi rendellenessĂ©g- (PIGD-) pontszĂĄmĂĄt (a 3.9–3.13. tĂ©telek összege) Ă©s az UPDRS III. rĂ©szĂ©nek posturalis stabilitĂĄsi tĂ©telĂ©t (3.12. tĂ©tel) kĂŒlön-kĂŒlön szĂĄmĂ­tottĂĄk ki. A betege- ket Berg-fĂ©le egyensĂșlyskĂĄlĂĄval (BBS), Mini egyensĂșly-Ă©rtĂ©kelƑ rendszer Teszttel (Mini- BESTest), Timed Up and Go (TUG) teszttel, kettƑs feladatĂș TUG teszttel Ă©s Forward Functional Reach (FFR) teszttel Ă©rtĂ©keltĂ©k kĂ©t ĂĄllapot szerint: StimulĂĄciĂł-ON (stim-ON)/ gyĂłgyszer-ON (Med-ON) Ă©s StimulĂĄciĂł-OFF (Stim-OFF)/Med-ON. EredmĂ©nyek – A betegek ĂĄtlagĂ©letkora 59,5 ± 9,1 (R: 41–71) Ă©v volt. Az UPDRS III. rĂ©szĂ©nek összpontszĂĄma Ă©s a PIGD alszekciĂł pontszĂĄma szignifikĂĄnsan javult a stimulĂĄciĂłt követƑen (p = 0,001), de az UPDRS III. rĂ©szĂ©nek posturalis instabilitĂĄs tĂ©tele nem vĂĄltozott szignifikĂĄnsan (p = 0,1). A Stim-ON/Med-ON Ă©s Stim-OFF/Med-ON körĂŒlmĂ©nyek között nem volt szignifikĂĄns kĂŒlönbsĂ©g a Mini-BESTest-összpontszĂĄm, a BBS-összpontszĂĄm, az FFR teszt pontszĂĄ- mai között (p > 0,05 mindegyiknĂ©l). A TUG teszt szignifikĂĄnsan javult a Stim-ON/ Med-ON ĂĄllapotban a Stim-OFF/Med-ON ĂĄl- lapothoz kĂ©pest (p = 0,03), de a DT-TUG teszt nem vĂĄltozott (p = 0,1). KövetkeztetĂ©s – A kombinĂĄlt kĂ©toldali STN-DBS Ă©s dopaminerg terĂĄpia tovĂĄbbi javulĂĄst eredmĂ©nyezett a motoros tĂŒnetek Ă©s a mobilitĂĄsi teljesĂ­tmĂ©ny tekintetĂ©ben, de az egyensĂșly Ă©s a kettƑs feladatĂș mobilitĂĄs tekintetĂ©ben nem
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