From accumulation mechanisms and the identification of effective faults, hydrocarbon distribution in slope areas of petroliferous basins is assessed. In this study, we superimpose two methods to ...develop a set of key methods, which can identify effective faults for hydrocarbon accumulation in slope areas. The first of this set of methods includes locating the distribution area of the connected sand bodies and paleotectonic ridges overlying the formation where the sand bodies are located, which aids determining the lateral migration path of hydrocarbons in slope areas. The second set of methods includes identifying the lateral sealing parts of faults that are oriented perpendicular or oblique to the channel sand bodies, thereby determining the faults that are effective for hydrocarbon accumulation. By applying these methods, we identify the effective faults in the first member of the Nantun Formation (K
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) on the Wunan slope of the Wuerxun Depression in the Hailar Basin. The results show that the effective faults in K
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are located mainly in its middle and northern parts, with a few distributed in the south-central part. This is conducive to reservoir development, since hydrocarbons which were generated in the western trough source rocks of K
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, accumulated in the nearby trap formed from a suitable configuration of the fault and sand body of K
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. This is consistent with previous exploration data, and the observation that hydrocarbons discovered in K
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on the Wunan slope are mainly distributed in the middle and northern parts of the region, and a small amount occur in the south-central part. The results show that this set of methods is feasible for determining effective faults for hydrocarbon accumulation in slope areas.
V letu 2016 so bili na Vrhniki, na levem bregu Ljubljanice tik za poslopjem Stare pošte (znana tudi kot Lavrenčičeva hiša, ki leži na območju Cankarjevega trga 1c), raziskani sledovi ...poznorepublikanske naselbine. Ugotovljene so bile štiri faze človekove aktivnosti. Prva faza je povezana z urejanjem (sekanjem in čiščenjem) nabrežja reke Ljubljanice, drugo predstavljajo naselbinske plasti, v tretji fazi pa je bilo obrežje utrjeno s kamnitim nasutjem. Vse tri faze lahko na podlagi drobnih najdb in rezultatov naravoslovnih analiz umestimo v čas od konca 2. st. do sredine 1. st. pr. n. št. V četrti fazi, po sredini 1. st. pr. n. št., je bil prostor opuščen. Pri Stari pošti je bila tako odkrita najstarejša rimska naselbina na območju Navporta. Novo najdišče leži okoli 350 m južno od avgustejske utrjene postojanke na Dolgih njivah in od naselbinskega območja na Bregu.
Analiza gradiva z najdišča Mužac (Moggio Udinese; Videm, Italija) ponuja vpogled v proces romanizacije v dolini Bele (Fella). Naselbina je ležala ob pomembni trgovski poti, po kateri je potekal ...rimski prodor v vzhodne Alpe. Tod je vodila rimska cesta iz Italije v Norik in pozneje proti limesu ob Donavi.
U nošnji brojnih prapovijesnih, a i kasnijih povijesnih zajednica pojas je bio važan funkcionalan, ali i dekorativan element, koji je nerijetko imao i naglašenu simboličku funkciju. Svojom formom, ...odabranim materijalom i načinom izrade te osmišljenim ornamentalnim sustavom mogao je prenositi različite poruke društvenog, ekonomskog i
simboličkog karaktera. Na području istočnog Jadrana i neposrednog zaleđa, a napose na liburnskom prostoru, tijekom posljednja 2. stoljeća pr. n. e. jedan specifični tip pojasnih kopči postaje istaknut i omiljen dio nošnje. Riječ je o lijevanim trapezoidnim pojasnim kopčama sa središnjim motivom koplja/strijele. Korpus nekolicine prethodno poznatih nalaza navedenog tipa uvelike se obogatio zahvaljujući sustavnim arheološkim istraživanjima nadinske nekropole gdje ih je otkriveno čak 44 primjerka. Njima se pridodaje i određen broj dosad nepubliciranih nalaza pohranjenih u zbirkama Arheološkog muzeja Zadar i Muzeju grada Šibenika. S obzirom na njihovu iznimnu zastupljenost u Nadinu, u kvantitativnom i kvalitativnom pogledu, te izostanak elaboriranog figuralnog narativa po čemu se već na prvi pogled razlikuju od oblikom srodnih pojasnih kopči pronađenih na japodskom, daorskom, labeatskom i isejskom kulturnom prostoru, predlaže se izdvajanje ovih specifičnih predmeta odore u zaseban tip Nadin.
General DAB 1st Harmonic TPS State Space Model Uicich, Simon; Gauthier, Jean-Yves; Lin-Shi, Xuefang ...
IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society,
2021-Oct.-13
Conference Proceeding
This paper proposes a generalized averaging 1 st harmonic state space model for Dual Active Bridge (DAB) converters fitting any triple phase-shift (TPS) modulation as well as classical modulation ...schemes. The model provides an analysis about steady state and AC behavior and about operating characteristics like RMS current and conducted emissions. Comparison of results with a full order SPICE simulation show a good agreement as well as with regard to the dynamic behavior prediction. With TPS modulation being the most effective means for optimizing the DAB's efficiency, the proposed approach avoids classical implementations' typical drawbacks such as the need for multiple models corresponding to the mapping of different operating space regions with respect to modulations or the need to pre-constrain control variables to specific switching modes. It can also help reduce the impact of large signal transients on the output filter or of the converter performance degradation with aging. The proposed model is suitable for designing a non-linear control scheme allowing better converter performances in relation to a classical one. The interest and accuracy of the proposed approach are shown through a 150W, 28V to 12V DAB design used for a flight computer power supply where the versatility in controller design and the converter efficiency optimization are required.
Summary A healthy 25-year-old man suffered from loss of consciousness due to ventricular fibrillation (VF). Emergency services required multiple cardioversion to restore sinus rhythm. Repeated ...electrocardiographic (ECG) recordings after admission showed non-type 1 Brugada ST-segment elevation in V1 and V2. Intravenous pilsicainide infusion augmented the ST-segment elevation but its morphology did not represent type-1 ECG. Intravenous administration of isoproterenol normalized the ST-segment elevation, and programmed electrical stimulation induced VF. Spontaneous VF recurred 1 year after introduction of implantable cardioverter defibrillator. Non-type 1 ST-segment elevation, to which pharmacological responses are similar to Brugada syndrome, may be used as a hallmark of ventricular tachyarrhythmia.
Flip Chip on Lead frame QFN has drawn significant business interests in industry because of its several advantages such as high power density, lower resistance, good thermal performance and high ...efficiency. Robust design is needed to qualify different reliability tests for different applications. Board level solder joint reliability (BLR) during thermal cycling is an important concern. The actual temperature cycling test is very time consuming and costly. Finite element analysis (FEA) has been a useful tool to quickly assess the solder joint fatigue life for packages like WBQFN (wire bonded quad flat non-lead), WCSPs (wafer-level chip scale) and lidded FCBGA (flip-chip ball grid array). The commonality of these packages is that each design has uniform shape of exposed leads. Lead size impact to BLR performance is not generally accounted for in typical FEA simulations, and only the most stressed pin is used for modeling correlation. However, it is not easy to implement this common modeling approach directly to flip-chip on leadframe package because of complex leadframe geometry resulting from nonuniform exposed lead size and shape. There is very little literature work from industry for BLR of flip chip on leadframe type of package.This paper proposes a new BLR modeling methodology to account for different lead geometry, and benefits of anchor pads. Improved correlation with this new modeling approach is demonstrated. The work also reveals new insights on factors that can impact BLR which are different from conventional knowledge. One of the factors is die area to package area ratio or often called DAPA. It is widely believed that larger DAPA will have worse BLR performance, but this trend is not directly applicable to flip-chip on lead frame package. Both modeling and empirical test data sheds more light on this new finding. Other factors that can impact BLR performance including die thickness have also been discussed. Correlation generated from this new modeling approach can be used to quickly assess the board level solder joint reliability of different designs.
On the quest for the historical Jesus, some biblical scholars and archaeologists alike have argued that the economic status of early first century CE Galilee portrays a poverty-stricken region and ...hence does not reflect the economic portrayals in the Gospels. In light of the debate, this study investigated the economic status of early first century CE Galilee that have been presented by archaeologists and biblical scholars. After which, the results were used to dialog with selected economic portrayals of the Synoptic Gospels, in order to find if there is confusion between “Text and Artifact.” Consequently, the study showed that there is no confusion between “Text and Artifact” on the matter of the economic portrayals of early first century CE Galilee and the Synoptic Gospels. Therefore, both sources demonstrated that the people of Jesus’s Galilee experienced wealth as well as poverty, thus authenticates the historicity of the Synoptic Gospels in their historical milieu.
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