Using an escrow account in the Developer Act

W artykule zostały przedstawione zagadnienia dotyczące prowadzenia mieszkaniowego rachunku powierniczego w działalności deweloperskiej. Ustawa deweloperska nakłada na deweloperów obowiązek otwarcia mieszkaniowego rachunku powierniczego w banku oraz reguluje prawa i obowiązki z nim związane. Omówiono również zadania banku w celu kontroli prawidłowego prowadzonego rachunku powierniczego w szczególności w zakresie wypłaty środków pieniężnych z rachunku przez dewelopera, a także udzielania informacji nabywcom i ewidencjonowania wpłat i wypłat.The article presents issues concerning the maintenance of a housing escrow account in real estate development. The Developer Act obliges developers to open a housing escrow account with a bank and regulates the related rights and obligations. The paper discusses the bank’s tasks to control the correct maintenance of an escrow account, in particular in the field of withdrawals of funds from the account by the developer, as well as to provide information to buyers and recording payments and withdrawals

Possibility of increasing the maximum range of ammunition for the KRAB 155 mm self-propelled gun-howitzer

W artykule zaprezentowano sposoby zwiększania donośności maksymalnej pocisków artyleryjskich na przykładzie amunicji 155 mm. Dla poszczególnych rozwiązań konstrukcyjnych scharakteryzowano podstawowe dane taktyczno-techniczne, ze szczególnym uwzględnieniem sposobu i „kosztu” osiągnięcia donośności maksymalnej, związanego z nią rozrzutu oraz zdolności do oddziaływania na cel. W drugiej części opracowania przedstawiono rezultaty badań własnych w tym zakresie oraz wybrane wyniki z uwzględnieniem różnych wariantów wykonania pocisku. Na bazie przeprowadzonych analiz wskazano też rekomendacje w zakresie pożądanych cech takiej amunicji. Mocno zostały również zaakcentowane wzajemne zależności pomiędzy charakterystykami przyjmowanego lub planowanego do przyjęcia na uzbrojenie sprzętu a możliwymi do uzyskania donośnościami maksymalnymi. Analiza i synteza przedstawionych w pracy danych wskazuje, że możliwe jest opracowanie siłami krajowego przemysłu zbrojeniowego amunicji dalekonośnej pod warunkiem szybkiego rozpoczęcia wskazanych do realizacji prac.The article presents methods of increasing the maximum range of artillery projectiles on the example of 155 mm ammunition. For individual solutions, basic tactical and technical data were characterised with particular emphasis on the method and “cost” of achieving the maximum range, the associated dispersion, and the ability to reach the target. The second part of this article presents the results of our own research in this area and it presents selected results taking into account variants of the projectile. On the basis of the conducted analyses, the recommendations were also presented regarding the required characteristics of such ammunition. The mutual dependencies between the characteristics of the weapons, being introduced or planned for introduction, and the maximum possible ranges to be obtained were also strongly emphasised. The analysis and synthesis of the data presented in the research paper show that it is possible to develop long-range ammunition by the domestic armaments industry, provided that the works indicated for implementation are commenced quickly

Supersonic Jet Spectroscopy and Density Functional Theory Study of Isomeric Diazines: 1,4- and 1,8-Diazatriphenylene. Why Do They Differ So Deeply?

We report on laser-induced fluorescence excitation and dispersed fluorescence spectra of two isomeric compounds: 1,4- and 1,8-diazatriphenylene (1,4- and 1,8-DAT) isolated in supersonic molecular jets, and their 1:1 complexes with protic solvents. We found that the ground and excited state vibronic patterns of bare 1,4-DAT differ significantly from those of 1,8-DAT, and those of the complexes of both isomers. A marked activity of several out-of-plane vibrations in 1,4-DAT and the symptoms of the distortion of the S₁ excited molecule were diagnosed from the vibronic spectra, whereas planar structures were predicted for 1,8-DAT in S₀ and S₁ states. An anharmonic double-minimum potential along an out-of-plane coordinate has been derived and used to predict higher overtones of the S₁ state vibration at 113 cm^–1. Large enhancement of fluorescence was observed upon formation of 1:1 complexes of 1,4-DAT with water or methanol, which is explained in terms of an increased separation of interacting (n,π*) and (π,π*) electronic states in the H-bonded complexes, and/or a suppression of the intersystem crossing process

Supersonic jet spectroscopy of parent hemiporphycene: Structural assignment and vibrational analysis for S 0 and S 1 electronic states

International audienceHemiporphycene (HPc), a constitutional isomer of porphyrin, is studied under supersonic expansion conditions by means of laser-induced fluorescence (LIF), visible-visible hole-burning experiments, single vibronic level fluorescence (SVLF) techniques, and quantum chemical calculations. Only one trans form of jet-cooled HPc is observed, in contrast with solutions studies that evidence a mixture of two trans tautomeric forms separated in energy by ca. 1 kcal/mol. Reliable structural assignment is provided by simulating absorption and emission patterns at the DFT and TD-DFT levels of theory. The vibronic spectra are nicely reproduced for both electronic ground and lowest excited singlet states for the most stable trans form. In contrast with another porphyrin isomer, porphycene (Pc), no tunneling or photo-induced hydrogen transfer are detected. The lower symmetry of HPc compared with Pc and the concomitant non-equivalent positions of the inner-cavity nitrogen atoms result in a non-symmetric double minimum potential for tautomerization, larger energy barrier, and a longer tunneling distance, with the average intramolecular hydrogen bonds length larger in HPc than in Pc. HPc readily forms hydrates that show red-shifted absorption relative to the bare molecule

Arresting Tautomerization in a Single Molecule by the Surrounding Polymer: 2,7,12,17-Tetraphenyl Porphycene

2,7,12,17-Tetraphenyl porphycene (TPPo) is known to undergo ultrafast (<1 ps) double-hydrogen transfer in solution. Fluorescence studies of single TPPo molecules embedded in a polymer matrix and excited with an azimuthally polarized laser beam reveal, for a considerable fraction of the population, double-lobe spatial emission patterns attributed to the absence of tautomerism. In consecutive image scans, these patterns change their orientation to nearly orthogonal. In some cases, switching of the orientation direction occurs through an intermediate case with a doughnut-shaped pattern, indicating the presence of fast tautomerism. These findings demonstrate that local polymer environment can drastically change the thermodynamics or kinetics of tautomerization. They also point out the contribution of the motion of peripheral substituents in the hydrogen-transfer coordinate. TPPo is proposed as a good probe for studying relaxation dynamics in thin polymer films

Spectroscopic investigation of photophysics and tautomerism of amino- and nitroporphycenes

Experiment and theory reveal similarities and differences between porphycenes substituted at the meso position with amino and nitro groups. </p