A novel red emitting fluoride phosphor, K₂LiAlF₆:Mn⁴⁺, with an excellent thermal quenching behavior and color stability for white LEDs is developed by a green synthetic route based on low-toxic H₃PO₄/KHF₂liquid instead of the highly toxic HF liquid.

Long lifetime, excellent chromatic stability, and easily obtainable white light are becoming three outstanding challenges faced by the state-of-the-art high-power LEDs. This study explored a novel single-component white-light-emitting phosphor-in-glass (PiG) for first time. It has quantum efficiency of 26.2% exhibits heat-resistance good humidity-resistance characteristics which rarely reported in traditional phosphor slurry. A proof-of-concept warm LEDs was fabricated combining PiG with...

Magmatic and tectonic processes can contribute to discontinuous crustal accretion play an important role in hydrothermal circulation at ultraslow-spreading ridges, however, it is difficult accurately describe the without age framework constrain evolution. Here we report on a multi-scale magnetic survey that provides constraints fine-scale evolution of detachment faulting system hosts activity 49.7°E Southwest Indian Ridge. Reconstruction multi-stage history shows previous episode took place...

Wet summers and dry winters are an essential feature of monsoon climates, but quantification change in wet-dry seasonality through time is very challenging because most geological materials fail to record sub-annual environmental signals, instead integrating years, decades, or centuries. Here we quantify Asian since the middle Pleistocene for climates using high-resolution stable oxygen isotope analysis land snail shells from Chinese Loess Plateau. This approach allows us collect data on...

Increasing evidence suggests that mesoscale eddies have a strong influence on the distribution and behavior of zooplankton micronekton. However, mechanisms driving their responses to are not yet fully understood, largely due low resolution previous observations. Underwater gliders equipped with acoustic equipment environmental sensors provide an ideal means obtain observations high temporal spatial resolutions. In this study, two underwater were used record parameters intensities across...

Highly accuracy classification and mapping of seafloor hydrothermal fields provides an important addition to research into the geological background exploration massive sulphides (SMS). Currently, acoustic remote sensing using multibeam sounding systems (MBES) is primary means achieving large-scale classification. However, characteristics complex topography, distribution deep water depth make it difficult obtain accurate high-resolution maps shipboard MBES surveys. Here a strategy combining...

Ground fissures often appear to be linear cracks on the earth's surface, but spatial curved surfaces cutting through superficial stratum in longitudinal direction beneath ground. How express such kind surface digital form is unprecedented. But certainly, models of ground fissures' will undoubtedly affect and even directly determine process degree research work fissure hazard environment. Base data, top TIN bottom Coarse Strata generated from boreholes, as well a number boundary conditions,...

Signature estimation is critical for source evaluation and data processing. Far-field measurement an accurate way to deterministically finalize the process more importantly clarify directivity. Based on position-fixed mode, a seismic survey carried out in India Ocean 2021 with deep-towed Janus-Helmholtz transducer as source. This work shows full view of acquiring, processing analyzing far-field signature. According source-receiver reciprocity theorem, incidence angle 7.4° ~ 87.8° covered...

From post-stack to pre-stack is the most important way solve problem of Paleogene reservoir and hydrocarbon detection in mid-deep exploration Bohai Sea. The extensive application attributes inversion put forward higher requirements for amplitude preserving gathers. Aiming at processing gathers, based on relative advantage low channel gather, an innovative data-driven optimization technique gather proposed. process completely 'data driven' can achieve double-correction frequency airborne...

The Shahejie formation is an important exploration stratum in the middle and deep strata of Liaodong Bay. study found that internal reservoirs has strong heterogeneity both lateral vertical directions, some single sand bodies are less than 1/8 main wavelengths. constraints sparse pulse inversion, −90° phase shift, amplitude attribute analysis difficult to meet needs fine exploration. While geostatistical inversion can effectively integrate different data sources (seismic, logging...

Summary Early research considered that high-quality reservoir of sha-2 member in Liaodong Bay Basin exploration area is reflect to strong seismic event. It said the stronger event richer development member. But there are some special cases, such as doesn't imply area. So we should base on reflection characteristics. This paper takes A oil field and B oil-gas structure for objects, researches characteristics this area, guiding petroleum production.

Summary As the bridge to connect seismic and geological, time-depth conversion is a hot topic of geophysical research. In recent years, with further exploration exploitation Bohai oilfield, higher accuracy required. Q oilfield located in central Shijiutuo uplift Sea complex fault anticline developed ancient background. whose target has deposition meandering river Minghuazhen Formation. From structural characteristics view, this typical low amplitude structure. Meanwhile, lateral variation...

Abstract Magmatic and tectonic processes can contribute to discontinuous crustal accretion play an important role in hydrothermal circulation at ultraslow-spreading ridges, however, it is difficult accurately describe the without age framework constrain evolution. Here we report on a multi-scale magnetic survey that provides constraints fine-scale evolution of detachment faulting system hosts activity 49.7°E Southwest Indian Ridge. Reconstruction multi-stage history shows previous episode...

In Bohai Bay Basin, oil and gas in Guantao Formation are often associated with bright spots (strong seismic reflection axes), which leads to the "illusion" that represent development. Aiming at causes, distribution law relationship of spots, this study has successively carried out rock physical analysis, model forward research, porosity saturation substitution, finally found main factors controlling strength axis. Note: This paper was accepted into Technical Program but not presented IMAGE...

The gas cloud in the Bohai Sea is relatively developed, and quality of P wave data this area poor, which difficult to meet needs structure research. Based on multi-component seismic collected large Sea, paper carried out research processing PS converted data, formed a number key technologies, including component rotation, anisotropy correction, multiple suppression, prestack migration, etc. final results show that imaging obviously better than wave, supports area. Note: This was accepted...